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Improving the capacity of quantum dense coding with both spontaneous emission and dephasing by non-Hermitian operation Laser Phys. (IF 1.2) Pub Date : 2024-04-17 Fei Chen, Yang Leng
Using a non-Hermitian operation approach, we propose a scheme to improve quantum dense coding of a qubit-qubit system interacting with a zero-temperature reservoir with both spontaneous emission and dephasing. By solving the master equation of the two-qubit system, we numerically obtain the final capacity of quantum dense coding. The numerical results show explicitly that the non-Hermitian operation
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Laser processing characteristics of PCD tool and modeling analysis Laser Phys. (IF 1.2) Pub Date : 2024-04-15 Ruiwang Tan, Xu Wang, Zhanjiang Yu, Guangfeng Shi, Shen Yang, Yiquan Li, Jinkai Xu
Through in-depth analysis of the experimental details and forming patterns of the nanosecond laser ablation polycrystalline diamond (PCD) textured tool processing system, this study explores the microscopic morphology and dimensions of micro-pits texture on the surface of PCD tools influenced by defocus amount, laser power, and pulse frequency. Experimental results indicate that the micro-pit textures
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Influence of cladding tube structure on transmission characteristics of negative curvature terahertz fiber Laser Phys. (IF 1.2) Pub Date : 2024-04-15 Dexian Yan, Ziwei Yuan, Jianzhong Qiu, Xiangjun Li
A novel type of polarization negative curvature terahertz fiber has been designed, which has a cladding region composed of two long semi-circular cladding tubes in the horizontal direction and four long semi-elliptical cladding tubes in the oblique direction. The optimal fiber dimensions are determined to investigate the internal relationship between polarization characteristics and fiber cladding
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23 KHz linewidth 1064 nm SOA based fiber laser by using parallel type subring cavities Laser Phys. (IF 1.2) Pub Date : 2024-04-15 Shien-Kuei Liaw, Lina Marlina, Zi Wang, Shu-Miao Chen, Bo-Heng Lee, Hsiou-Hsin Tsai
This study presents a high-quality fiber ring laser created by integrating a semiconductor optical amplifier to generate amplified spontaneous emission with a four-subring resonator and utilizing the nonlinear polarization rotator effect. When the driven current of 400 mA, the laser exhibited a maximum power deviation of 0.204 dB and a wavelength deviation of 0.012 nm during a one-hour testing period
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New quantum LDPC codes based on Euclidean Geometry Laser Phys. (IF 1.2) Pub Date : 2024-04-15 Ya’nan Feng, Chuchen Tang, Chenming Bai
With the advancements in quantum error correction technique, quantum low density parity check (QLDPC) codes have emerged as a promising area in the field of quantum error correction. This paper focuses on the requirement of QLDPC codes based on points excluding the origin, and lines that do not pass through the origin of Euclidean Geometry. It also explores QLDPC codes based on all the points and lines
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Microwave assisted Fraunhofer diffraction pattern in a four-level light–matter coupling scheme Laser Phys. (IF 1.2) Pub Date : 2024-04-11 Malika Amari, Carlos Rodriguez-Benites, Alaa A Omran, Majli Nema Hawas, Abhinav Kumar, Laith H Alzubaidi, Shafik Shaker Shafik
The experimental realization of two-dimensional (2D) electromagnetically induced grating is explored by monitoring the Fraunhofer diffraction pattern in a microwave-driven four-level Y-type atomic medium under the action of two orthogonal standing-wave (SW) fields. Due to the position-dependent atom–field interaction, the information about the high diffraction order of the probe light can be obtained
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Passively Q-switched Er-doped fiber laser based on carbon-doped silver nanoparticles saturable absorber prepared using laser ablation method Laser Phys. (IF 1.2) Pub Date : 2024-04-09 Haroon Asghar, Rizwan Ahmed, Zeshan A Umar, Tahani A Alrebdi, M Aslam Baig
In this work, we investigate the effect of carbon-doped silver nanoparticles on the Q-switched performance of erbium-doped fiber laser (EDFL). The carbon-doped silver nanoparticles were synthesized using a laser ablation method. The prepared nanoparticles were inserted between fiber ferrules using the adhesion process of the index-matched gel. Incorporating a saturable absorber inside the laser cavity
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Real-time observation of soliton pulsation and explosion in an Yb-doped fiber laser Laser Phys. (IF 1.2) Pub Date : 2024-04-04 Mingzhu Fu, Xude Wang, Yuhan Fan, Mengxiang Lu, Kaixin Li, Suwen Li
Nonlinear dissipative systems support pulsating solutions and exhibit many interesting dynamic behaviors. Here, we report various soliton pulsations and explosions in an all-normal dispersion ytterbium-doped fiber laser by utilizing the dispersive Fourier transform technique. By the different soliton dynamics, these phenomena can be classified into single-soliton pulsation and explosion, dual-soliton
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Period-multiplying pulses generation by total self-mode-locking of Nd:YVO4 lasers Laser Phys. (IF 1.2) Pub Date : 2024-04-04 M M Xu, Z R Li, M Hu, Y Y Ji, M H Bi, H Z Li, X F Zhou, S Q Pan, C Liu
We experimentally demonstrated the phenomenon of period-multiplying pulses in the self-mode-locking Nd:YVO4 laser. With a fixed cavity length of 50 mm and the input mirrors in the resonator with radii of curvature of 100 mm, 200 mm, and 500 mm, the mode-locked pulses with pulse periods 4 times, 6 times and 10 times the fundamental mode-locked pulse period are observed respectively. Besides, by tilting
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Sensitivity of mass sensors enhanced by higher-order exceptional points in an optomechanical system Laser Phys. (IF 1.2) Pub Date : 2024-04-03 Yong He, Qi Chen
We propose a high-sensitivity mass sensor, which is realized by a three-mode optomechanical system composed of an optical cavity with gain, an optical cavity with loss, and a mechanical resonator with loss. When the system’s parameters satisfy certain conditions, a higher-order exceptional point (EP) is shown in the eigenfrequency spectrum. Some particles with a tiny mass deposited in the mechanical
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Azimuthal modulation of light propagation through 1DPCs via efficient nonlinear frequency mixing Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Khalid Mujasam Batoo, F Al-Dolaimy, Ali Hisham Al-Shukarji, Ussam Abdali Abdulridui, Sajjad Hussain, Jamal K Abbas, Murtadha Laftah Shaghnab, Montather F Ramadan, Ahmed Alawadi, Ali Alsalamy
The present study aims to investigate the transmitted and reflected light beams from a one-dimensional defect photonic crystal (1DPC) composed of a three-level ladder-type quantum system. The lower leg of the ladder scheme is driven by a weaker probe beam, while the upper leg is driven by a stronger control beam. Unlike natural atoms, this type of model with broken symmetry permits the generation of
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Quantum correlation and squeezing in pulses propagating in dispersion oscillating fibers Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Andrey I Konyukhov, Julia G Konyukhova, Leonid A Melnikov
We consider the squeezing and correlation of quantum fluctuations in pulse pairs arising due to soliton fission in dispersion oscillating fibers. The dispersion oscillation acts as a time-domain pulse splitter. After the split, the pulses interact via their tails and acquire nonzero correlations. We analyze the correlation pattern using Karhunen–Loève mode expansion. The regime of high intrapulse and
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Rapid detection and recognition of phosphors using laser-induced breakdown spectroscopy and principal component analysis method—back propagation neural network algorithm Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Lingbin Shen, Liping Tian, Hongbing Yao, Dongpeng Tian, Yifan Ge, Zhongmou Sun, Yuzhu Liu
Rapid detection and quality monitoring of phosphor materials have always been a difficult problem in phosphor materials market. In this work, an independently proposed method based on principal component analysis method—error back propagation neural network algorithm—laser induced breakdown spectroscopy (PCA-BPNN-LIBS) was used for the detection and recognition of phosphors. Firstly, spectroscopic
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Optical fabrication of (2 + 1)-dimensional photorefractive photonic lattices by improved Billet split lens Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Peng Guo, Wentao Jin, Shaochun Fu, Longsheng Liu, Xiaohong Sun
A convenient way to optical fabricate (2 + 1)-dimensional photonic lattice microstructures was experimentally demonstrated in photorefractive crystal. An improved Billet split lens combined with a Fourier transform lens can generate large area interference of multiple plane waves. The (2 + 1)-dimensional square photonic lattice microstructures are optically induced in an iron doped lithium niobate
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An identity-verifiable quantum threshold group signature scheme based on three-particle GHZ states Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Zhiming Deng1, Dianjun Lu, Teng Chen, Weixin Yao
With the advancement of the new generation of information technology in recent years, quantum digital signatures have been widely concerned. Among them, quantum threshold group signatures have become a hot research field due to their advantages such as low cost and strong scalability. Therefore, in this paper, we propose an identity-verifiable quantum threshold group signature scheme based on three-particle
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Masking quantum information in multipartite systems based on generator matrices Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Meng-Ya Wang, Chen-Ming Bai, Ya-Nan Feng, Sujuan Zhang, Lu Liu
Quantum information masking is a protocol that hides the original quantum information from subsystems and spreads it over quantum correlation, which the original information of input states is completely unknown to local subsystems. In this paper, we explore the possibility of partial masking of quantum information in multipartite systems through using the generator matrices and stabilizer codes, as
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A half-open cavity random fiber laser based on a single-mode fiber and fiber Bragg grating Laser Phys. (IF 1.2) Pub Date : 2024-03-28 Wei He, Zhihan Li, Shaode Li, Siqi Ma, Wenduo Zhang
A random erbium-doped fiber laser based on fiber Bragg grating (FBG) and single-mode fiber (SMF) was designed and realized experimentally in this study. For the proposed random fiber laser (RFL), the 10 km long SMF was used to generate Rayleigh scattering (RS) emissions, along with FBG to provide randomly distributed feedback in the cavity. In the experiment, the RFL laser threshold is 55 mW, as the
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Hysteresis phenomenon in single electron nonlinear Thomson scattering in tightly focused linearly polarized lasers caused by collision position changes Laser Phys. (IF 1.2) Pub Date : 2024-03-27 Mingjing Zeng, Yangyi Zhang, Yifan Chang, Zekai Yu, Youwei Tian
The collision between high-energy electrons and linearly polarized laser pulses is systematically studied, which has significant application value. The effect of different laser parameters on the spectrum and power angular distribution has been analyzed. The maximum transverse amplitude of the electron motion track changes as one moves farther away from the focal point acting as the electronic initial
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Goos–Hänchen shifts in a V-type three-level atomic system interacting with squeezed vacuum Laser Phys. (IF 1.2) Pub Date : 2024-03-27 HaiPeng Zeng, Aijie Ma
This study explores the Goos–Hänchen (GH) shift phenomenon within a cavity hosting a V-type three-level atomic system, engaged with two independent broadband squeezed baths. Our exploration encompasses a thorough analysis of the lateral shifts in both reflected and transmitted light beams, with a focus on the impact of critical factors, i.e, coupling field strength, incoherent pumping field strength
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Quasi-three-level laser pumped Yb:GdCOB tunable laser from 1030 to 1036 nm Laser Phys. (IF 1.2) Pub Date : 2024-03-27 Jiarui Wang, Yaoyu Zhang, Yongliang Li
We report a quasi-three-level laser pumped Ca4GdO(BO3)3 (Yb:GdCOB) tunable laser based on the transition from the 2 F 5/2 level to the 2 F 7/2 level. By adjusting the 902 nm pump power, a continuous waves Yb:GdCOB laser was obtained with the near-infrared wavelengths shifting from 1030 nm to 1036 nm. The highest tuning power of 2.5 W was achieved with a slope efficiency of 19.9%. To our knowledge,
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Spatially structured optical effects via composite vortex light in a dielectric medium Laser Phys. (IF 1.2) Pub Date : 2024-03-20 Ahmed Ahmed Ibrahim, Shaymaa Abed Hussein, Sanaa Fathy Mahmud, Zahraa Hassan Ward, Bahira Abdulrazzaq Mohammed, Khalid Mujasam Batoo, Sajjad Hussain, Enas R Alwaily, Taha Raad Al-Shaikhli, Hussein Abdullah Abbas, Ahmed Alawadi, Ali Ihsan
In this letter, we have proposed a model for spatially structured transmitted and reflected lights from dielectric medium consists of four-level coherent system. An elliptically polarized probe field and a composite vortex light in the presence of external magnetic field are interacted by this medium. We have shown that by controlling the external magnetic field, ellipticity of the probe light and
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Bottle-shaped second harmonic generation with adjustable locations Laser Phys. (IF 1.2) Pub Date : 2024-03-19 Xiaokang Hu, Yan Sheng, Ruwei Zhao, Shan Liu, Tianxiang Xu, Feng Chen
Nonlinear photonic crystals (NPCs) have been widely used for studying nonlinear wave behaviors and in many applications requiring generation of light at new frequencies. In particular, the nonlinear photonic structures can be smartly designed to facilitate multiple functions in a single crystal. Here we show how to design a two-dimensional NPC to realize bottle-shaped second harmonic generation from
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Effect of diphenylalanine on the functional activity of porphyrin and non-porphyrin photosensitizers solubilized by Pluronic F127 Laser Phys. (IF 1.2) Pub Date : 2024-03-19 N A Aksenova, I V Shershnev, V V Kardumyan, A V Chernyak, P S Timashev, A B Solovieva
The effect of the diphenylalanine (Phe-Phe) amino acid on the rate of tryptophan photooxidation catalyzed by photosensitizers (PS) of different natures: dimegin (DMG), fluorinated tetraphenylporphyrin (FTPP), photoditazine (PD) and methylene blue (MB) was studied. It was shown that in the presence of Phe-Phe, the effective constant of photooxidation of the substrate catalyzed by DMG, PD and MB in the
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High brightness widely tunable, hundred picosecond mid-IR MgO:PPLN optical parametric oscillator with short cavity Laser Phys. (IF 1.2) Pub Date : 2024-03-18 Zhen-Ling Li, Ao-Nan Zhang, Yun-Ping Wang, Ke Liu, Xiao-Jun Wang
A high brightness hundred picosecond (ps) mid-infrared tunable optical parametric oscillator (OPO) based on MgO doped periodically poled lithium niobate (MgO: PPLN) was demonstrated. The pumping source was provided by a cascade amplified microchip laser at 10 kHz with pulse width of 466 ps. The idler wavelength tuning from 2.8 to 4.3 μm was achieved by the combination of period and temperature tuning
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Hundred-watts-level Ho:YLF slab laser with good beam quality Laser Phys. (IF 1.2) Pub Date : 2024-03-18 Y F Mao, Q L Long, J M Gao
We demonstrated a hundred-watts-level and good beam quality Ho:YLF slab laser with a hybrid cavity. When the incident pump power was 263 W, we obtained a maximum output power of 105 W. The slope efficiency with the incident pump power was 52.5%, and the optical-to-optical conversion efficiency was 39.9%. The instability of the maximum output power was measured to be 0.35% in 30 min. With the increase
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Experimental investigation on cross-beam energy transfer between P-polarized lasers at 45-deg incidence Laser Phys. (IF 1.2) Pub Date : 2024-03-18 Ning Kang, Anle Lei, Guoxiao Xu, Huiya Liu, Shenlei Zhou, Zhiyong Xie, Honghai An, Xichen Zhou, Zhiheng Fang, Wei Wang
In this paper, we report the first experimental results on cross-beam energy transfer (CBET) at the Shengguang-II laser facility, in which two p-polarized laser beams irradiated planar targets at 45-deg incidence orthogonally. Frequency shifts of 0 and 0.06% were added between the two beams to investigate the relation of CBET to the degree of frequency shift. Enhancement of scattering was observed
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Beam quality evolution in large-mode-area specially doped laser fiber through bend-induced effective refractive index change Laser Phys. (IF 1.2) Pub Date : 2024-03-15 Sajib Chowdhury, Debparna Majumder, Vincent Akash Gomes, Debasis Pal, Anirban Dhar, Atasi Pal, Debashri Ghosh
The effect of bending in a specially doped large-mode-area (LMA) gain fiber on the beam quality of the laser and amplifier has been studied through simulation and experimentation. The effect on the overlap between the fundamental mode (FM) and the doping region due to bend-induced refractive index change was studied theoretically by varying the bend radius. Bend radius of the gain fiber in the range
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An experimental and theoretical study on Dy3+-doped ZBLAN fiber laser, core-pumped at 1.1 μm Laser Phys. (IF 1.2) Pub Date : 2024-03-15 Junha Jung, Kyungtaek Lee, Jeehwan Kim, Ingwon Kim, Ju Han Lee
An experimental and theoretical investigation into a core-pumped Dy3+-doped ZBLAN fiber laser with 1.1 μm pumping was conducted to figure out a configuration for better slope efficiency. First, the laser was experimentally constructed with a simple Fabry–Pérot cavity incorporating AlF3 no-core fiber endcaps. The maximum output power of 607 mW was obtained readily with a slope efficiency of 25%. Next
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Controllable optical bistability and multistability in a V-type three-level atomic system interacting with two broadband independent squeezed baths Laser Phys. (IF 1.2) Pub Date : 2024-03-13 Khalid Mujasam Batoo, Youssef Ali Naeem, Ahmed Ahmed Ibrahim, Bouchaib Zazoum, Sanaa Fathy Mahmud, Ruaa Sattar, Imad Ibrahim Dawood, Montather F Ramadan, Ahmed Read Al-Tameemi, Eftikhaar Hasan Kadhum, Ahmed Huseen Redhee
In this study, we investigate the optical bistability (OB) and optical multistability (OM) phenomena within a V-type three-level atomic system interacting with two independent broadband squeezed baths confined in a unidirectional cavity. Our analysis reveals that the transition between OB and OM is influenced by the strength of the control field and the intensity of the squeezed vacuum. Notably, the
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Time-resolved FRS detection of OH radical for chemical reactions rate measurement Laser Phys. (IF 1.2) Pub Date : 2024-03-12 Daria M Plastinina, Pavel V Koshlyakov, Evgeniy N Chesnokov
The time-resolved Faraday rotation spectroscopy method with a DFB diode laser at 1434 nm was used to detect the hydroxyl radical OH in the first overtone region. Experiments were made at the most intense Q(3/2) line of the 2Π3/2 electronic term. The sufficient concentration for radical measurement is 2 × 1012 cm−3, with the resolving time approximately 10−6 s. This resolution is sufficient for studying
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Low-power infrared laser on survival, proliferation, and reactive oxygen species levels in Escherichia coli cultures Laser Phys. (IF 1.2) Pub Date : 2024-03-08 Marisa da Cunha Sales, Giovanna de Pontes dos Santos, Ana Caroline da Silva Ferreira, Andre Luiz Mencalha, Adenilson de Souza da Fonseca
Laser devices are light sources that emit monochromatic, coherent, and collimated electromagnetic radiation beams. Low-power lasers are widely used to treat clinical conditions based on the photobiomodulation effect. Despite therapeutic applications, mainly in continuous waves, limited data are available on photobiomodulation effects induced by low-power lasers in the pulsed emission mode. Thus, the
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Optomechanically induced transparency in a hybrid system containing two-level atomic ensemble and optical parametric amplifier Laser Phys. (IF 1.2) Pub Date : 2024-03-08 Gongtao Yu, Guixia Pan
We investigate the physical properties of multiple optomechanically induced transparency in a system. The system consists of two charged mechanical resonators and an optical cavity. An optical parametric amplifier (OPA) and a two-level atom ensemble are filled into the optical cavity. Some physical phenomena appear in the system driven by the probe field and the pump field. The width of transparent
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Numerical investigation of a wideband supercontinuum source based on a large-mode-area photonic crystal fiber pumped at 1.3 μm Laser Phys. (IF 1.2) Pub Date : 2024-03-05 Yu Xin Jin, Qian Qian Hao, Jing Jing Liu, Jie Liu, Qian Qian Peng
A numerical investigation was conducted to obtain a supercontinuum spanning about two octaves using a large mode area photonic crystal fiber (PCF) pumped at 1.3 μm. In our study, a 1.3 μm femtosecond laser and a silica-based large mode area PCF were selected as the pump source and nonlinear medium, respectively. The nonlinear Schrodinger equation was solved with split-step Fourier method to simulate
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How many sessions of quantum key distribution are allowed from the first launch to the next restart of the system? Laser Phys. (IF 1.2) Pub Date : 2024-02-26 S N Molotkov
Quantum cryptography systems are systems for extending the initial start key, which is required at the start of the system, to ensure information-theoretic authentication of messages in the classical communication channel. In subsequent sessions, a quantum key is generated, part of which is used for authentication in subsequent sessions. There is a fundamental question for quantum cryptography—how
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Hybrid modeling and optimization of fiber laser hole cutting of austenitic stainless-steel sheets using response surface Laser Phys. (IF 1.2) Pub Date : 2024-02-22 Zhenhua Niu, Mohammad Hossein Razavi Dehkordi, Mohammadreza Ghazi, Mohammad Akbari
In this study, an efficient approach was proposed to systematically model and optimize the laser small hole cutting process parameters using a hybrid approach for the design of experiment and multi-objective genetic algorithm optimization. The central composite design and response surface methodology were used to effectively model the impact of four main factors: cutting speed, laser power, gas pressure
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Study on the spectra of Tieguanyin tea and ash by laser-induced breakdown spectroscopy Laser Phys. (IF 1.2) Pub Date : 2024-02-15 Jingwen Li, Lixing Yao, Li Shen, Cong Wang
Tea ash is the inorganic residue of tea after a series of chemical and physical reactions under high temperature environment. The compositions of tea and ash are very different. In addition, the compositions of ash are closely related to the quality of tea. In this work, the compositions of Tieguanyin tea and ash were analyzed by laser-induced breakdown spectroscopy (LIBS), and the differences of elements
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Effects of detuning on entropic uncertainty bound and quantum correlations in dissipative environments Laser Phys. (IF 1.2) Pub Date : 2024-02-15 Shahram Mehrmanesh, Maryam Hadipour, Soroush Haseli
One of the fundamental arguments in quantum information theory is the uncertainty principle. According to this principle, two incompatible observables cannot be measured with high precision at the same time. In this work, we will use the entropic uncertainty relation in the presence of quantum memory. Considering a dissipative environment, the effects of the detuning between the transition frequency
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Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber Laser Phys. (IF 1.2) Pub Date : 2024-02-15 Xiuqi Wang, Mengping Zhong, Huanhuan Li, Kunyang Wang, Can Li, Junjie Zhang, Shiqing Xu
In this work, an all-fiber saturable absorber (SA) based on nonlinear multimode interference in a short few-mode fiber (FMF) was proposed. Saturable absorption in this all-fiber device was demonstrated with an absorption modulation depth and a saturation fluence of 14.3% and 55.6 μJ cm−2, respectively. A stable mode-locking operation was observed in a thulium-doped passively mode-locked fiber laser
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Passively mode-locked Er-doped fiber laser with single and double wavelength pulses based on germanene saturable absorber Laser Phys. (IF 1.2) Pub Date : 2024-02-13 Jiashuai Ding, Xueyao Liu, Tuo Li, Xiaofeng Zou, Yanfeng Yu, Nannan Xu, Xinxin Shang, Hua Lu, Chen Cheng, Pu Huang, Huanian Zhang, Dengwang Li
In this paper, we focus on the single crystal material germanium (Ge), which is fabricated into saturable absorbers (SAs) employing liquid phase exfoliation, and validate it with an erbium-doped fiber laser (EDFL). The Ge SA was obtained with a modulation depth of 9.8% and a saturation intensity of 11.02 MW cm−2. The single-wavelength mode-locked pulse with a minimum pulse width of 847 fs was obtained
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The influence of Ohmic noise on the dynamics of three-spin open quantum system Laser Phys. (IF 1.2) Pub Date : 2024-02-12 Muhammad Javed, Sidra Salim, Sumayya Said, Khushnood Shah, Atta ur Rahman
The dynamics of open quantum systems under decoherence effects remain a hotly debated topic in the case of the practical deployment of quantum information processing. In this regard, we examine how the three-qubit mixed state is affected by changes in the cut-off frequency of the Ohmic spectral density in a harmonic reservoir. Specifically, the degree of quantum memory-assisted entropic uncertainty
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Self-focusing/defocusing of skew-cosh-Gaussian laser beam for collisional plasma Laser Phys. (IF 1.2) Pub Date : 2024-02-12 K Y Khandale, S S Patil, P T Takale, A S Patil, R T Patil, S D Patil, M V Takale
The inverse relationship between the linear increase in skewness parameter s and the domain’s width of the order of skewness n plays a vital role in both critical beam radius and propagation dynamics of skew-cosh-Gaussian (skew-chG) laser beams. The interplay between the skewness parameter s and the order of skewness n is explored analytically and graphically in the current study to unveil the complexity
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Investigation of renal calculi fragmented tracer particles in lithotripsy model by laser speckle technique Laser Phys. (IF 1.2) Pub Date : 2024-02-09 R Balamurugan, K Rathina
We have developed a laser sheet method to evaluate micro-sized fragmented calcium oxalate granular particles created kidney stones suspended in a Newtonian fluid in an in vitro model. These tracer particles are examined by laser optical techniques. An optical setup is configured with a laser sheet to conduct image velocimetry on these calcium oxalate seed particles in the urine environment. The experimental
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Belt conveyor speed detection based on fiber-optic Sagnac interferometer vibration sensor Laser Phys. (IF 1.2) Pub Date : 2024-02-01 Yaru Hou, Pingjuan Niu, Jia Shi, Yuan Xie, Mengyu Yang
With their long transportation distance and high productivity, belt conveyors are characterized as the main equipment for bulk material transportation in coal mines and other key industries. However, its speed detection method has always been an engineering challenge under harsh working conditions. In this work, the elastic-optical effect of the polarization-maintaining fiber is used to design a fiber
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Research on multi-image encryption method based on image scaling and ghost imaging Laser Phys. (IF 1.2) Pub Date : 2024-02-01 Guoqiao Qiu, Yiqiang Zhang, Leihong Zhang
Optical information processing technology itself is characterized by high speed and parallelism, while the wavelength of light is short and the loading information capacity is large. Therefore, optical encryption is of great significance in the field of image encryption. For multi-image encryption, a multi-image encryption system (ISK-MGI) based on image scaling and ghost imaging is proposed in this
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Resonant second-harmonic generation of self-focused oblique incident laser beam in plasma Laser Phys. (IF 1.2) Pub Date : 2024-01-31 Vinay Sharma, Vishal Thakur, Sushila Srivastava, Niti Kant
The present manuscript aims to realize the effect of self-focusing on second-harmonic generation (SHG) by oblique incident laser beams in plasma. When an intense laser beam is obliquely incident on the plasma, it is resolved into reflected and refracted components, and resonant SHG is produced in the reflected component on account of the self-focusing of the incident laser. With the help of paraxial
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Organic frame metal structure materials UIO-66 for picosecond ultrafast pulsed fiber lasers Laser Phys. (IF 1.2) Pub Date : 2024-01-30 Guanyun Ding, Yichao Zhang, Linshi Wang, Yuxian Zhang, Jianqi Huang, Kaiqi Liu, Yuyue Gu, Zhaogang Nie, Guanyu Liu
The UIO-66 studied in this paper exhibits unprecedented thermal stability with a very high surface area and mechanical strength. This unique combination of properties opens up a wide range of promising applications. Here, we investigate the saturable absorption effects and ultrafast photonic applications of UIO-66. It shows that UIO-66 could emerge as a novel nonlinear material for ultrafast optics
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Polarization state transition mechanism of light through turbid media by Monte Carlo simulation Laser Phys. (IF 1.2) Pub Date : 2024-01-25 Yuhu Ren, Jimo Jian, Wenjiang Tan, Jing Wang, Tao Chen, Haikun Zhang, Wei Xia
We study the propagation of polarized light through turbid media with high scattering coefficient (μ s = 50 cm−1) and disclose the physical processes involved in the evolution of Stokes vector. The results show that the components of the Stokes vector can be expressed as the superimposition of the generalized divergence and the generalized curl of the two orthogonal electric field vectors. The components
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Dynamic all-optical memory switching based on atomic optical bistable behavior in a three level Λ-type atomic system Laser Phys. (IF 1.2) Pub Date : 2024-01-18 Haiqiang He, Bixuan Fan, Min Xie
We theoretically investigate the atomic optical bistability (AOB) in a three-level Λ-type atomic system confined in a unidirectional optical ring cavity. The role of the intensity or detuning of the control field on AOB is explored, and results show that absorption, dispersion, and nonlinearity can be modified significantly by the control field due to quantum coherence and interference in multilevel
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Dynamic laser speckle study on the effect of TiO2 and SiO2 nanoparticles in coatings Laser Phys. (IF 1.2) Pub Date : 2024-01-17 R Balamurugan, A R Arul, H B Ramalingam, R Venckatesh
The coatings of TiO2 and SiO2 nanoparticles mixed with latex paint on the sample are studied. The sample coin is coated primarily with latex paint alone and then with additives such as TiO2 and SiO2 nanoparticles separately with the same percentage of concentration. The sample is illumined by a coherent source of light and produces tiny bright and dark fingerprints by the interference effect of the
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High power narrow linewidth fiber laser based on superfluorescent white noise modulation Laser Phys. (IF 1.2) Pub Date : 2024-01-09 X Shan, T Hou, F Li, R Zhu
High power narrow linewidth fiber lasers have important applications in the fields of national defense, military and industrial intelligent manufacturing. At present, the power enhancement of narrow linewidth lasers is limited by the nonlinear and thermal effects of fiber, among which the stimulated Brillouin scattering (SBS) effect is highly destructive due to its low threshold. The SBS effect is
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Ultra-broadband high-efficiency solar absorber based on Ti-GaAs-Au structure for UV to near-infrared spectral range Laser Phys. (IF 1.2) Pub Date : 2024-01-04 Jincheng Wang, Hengli Feng, Yang Gao
In this study, we propose an ultra-broadband solar absorber composed of a trapezoidal base, an outer circular ring, and four nano-cylinders. The absorber has a covered bandwidth range of 300–4000 nm and a temperature range of 373–973 K. The average absorptance within the mentioned wavelength range is over 96.52%, and the efficiency of solar energy thermal conversion is above 0.9 at 373–973 K under
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Quantum super-resolution with balanced homodyne detection in low-earth-orbit Laser Phys. (IF 1.2) Pub Date : 2023-12-28 Ronakraj K Gosalia, Robert Malaney, Ryan Aguinaldo, Jonathan Green
Quantum super-resolution involves resolving two sources below the Rayleigh limit using quantum optics. Such a technique would allow high-precision inter-satellite positioning and tracking on communication and navigation constellations. Due to the size, weight and power constraints typical of low-earth-orbit (LEO) satellites, a simple solution is often preferred. Here, we show that a balanced homodyne
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Wavelength-stabilized figure-of-9 thulium-doped all-fiber laser emitting 560 fs pulses Laser Phys. (IF 1.2) Pub Date : 2023-12-22 Moritz Bartnick, Gayathri Bharathan, Thorsten A Goebel, Ria G Krämer, Stefan Nolte, Camille-Sophie Brés
We demonstrate a figure-of-9 all-fiber thulium-doped laser (TDFL) that generates 560 fs long pulses at 1948 nm wavelength. In order to achieve self-starting passive mode-locking, we utilize an in-fiber Faraday rotator to induce a nonreciprocal phase shift. To the best of our knowledge, this is the first all-fiber TDFL that combines an artificial saturable absorber (SA) with a chirped fiber Bragg grating
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Manipulating helical phase of HHG vortex with atomic states Laser Phys. (IF 1.2) Pub Date : 2023-12-21 Kecheng Liu, Guizhong Zhang, Shenghua Zhang, Wei Shi, Jianquan Yao
By deploying the strong-field approximation theory, we perform numerical simulation on atomic high-order harmonic generation (HHG) of hydrogen and HHG vortices generated by hydrogen layer. Our results show that the atomic HHG spectra demonstrate peak-shifting and the helical phase of the HHG vortex can be manipulated with initial states of atoms, all ionized by oppositely polarized bicircular ω and
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Enhancing the capacity of quantum dense coding from correlated amplitude damping channel via non-Hermitian operation Laser Phys. (IF 1.2) Pub Date : 2023-12-08 Yang Leng, Fei Chen
Using the non-Hermitian operation approach, we propose a scheme to protect and enhance quantum dense coding from correlated amplitude damping (AD) decoherence. In contrast to the results of memoryless AD channel, we show that the memory effects play a significant role in the suppression of quantum dense coding sudden death. Moreover, we find that the damaged quantum dense coding can be effectively
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Tunable wide spacing all-fiber dual-wavelength holmium-doped fiber laser using a Lyot filter operating above 2 µm Laser Phys. (IF 1.2) Pub Date : 2023-12-08 H Ahmad, J W Chiam, M Z Samion, M K A Zaini, M Z Zulkifli, K Thambiratnam
In this work, we successfully demonstrated an all-fiber, dual-wavelength holmium-doped fiber laser (HDFL) with a tunable wavelength spacing range of 8 nm to 24 nm. The HDFL utilizes a Lyot filter to obtain a stable dual wavelength output, with the Lyot filter being constructed from a polarizer, a 20 m polarizing maintaining fiber (PMF) and two polarization controllers (PCs). The dual-wavelength HDFL
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Reconstruction method of computational ghost imaging under atmospheric turbulence based on deep learning Laser Phys. (IF 1.2) Pub Date : 2023-12-05 Jingyao Xia, Leihong Zhang, Yunjie Zhai, Yiqiang Zhang
Ghost imaging, as an emerging imaging method, has great advantages in harsh environment with its off-object imaging characteristics. In this paper, we use a turbulence model based compressive sensing computational ghost imaging system to simulate atmospheric turbulence, analyze the effects of various factors on the imaging results, and recover the images under extreme turbulence conditions using conditional
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Improved calculation of the Mie solution and the geometrical optics approximation for large droplets Laser Phys. (IF 1.2) Pub Date : 2023-12-05 Dmitrii N Gabyshev, Rodion M Ganopolsky
This article considers energy distribution of light inside a uniformly illuminated transparent water droplet. Two methods are used: the geometrical optics approximation and the Mie solution derived from wave optics. The authors describe in detail calculation algorithms suitable for efficient computer implementation and ways to improve them. In the limit for large droplets, both similarities and differences
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Structural changes in the crystal lattice in enamel under Er,Cr:YSGG laser irradiation and oven heated by Rietveld analysis Laser Phys. (IF 1.2) Pub Date : 2023-12-04 J S Rabelo Neto, P A da Ana, V L Mazzocchi, M E G Valério, D M Zezell
Changes in the crystal lattices and compositions of the dental enamel powders were evaluated after oven or Er,Cr:YSGG laser irradiation. A decrease in the Ca/P ratio to levels close to the ideal theoretical value of laser irradiation caused a considerable decrease in the hydroxyapatite crystallite size but without changes in the crystallographic phase. These changes alter the material, can affect the
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Laser speckle-based estimation of surface condition for designing quieter material Laser Phys. (IF 1.2) Pub Date : 2023-11-30 Mausumi Mahapatra, Priyanka P Singh, Ganeswar Nath
Laser speckle is a non-contact, non-interfering, non-destructive, rapid and controllable technique with a large area of coverage that has attracted much attention for surface analysis of materials. The emergence of different natural cellulosic materials as potential candidates for the replacement of synthetic ones is promising, but their sustainability from the point of view of material design is still