Photonic-crystal surface-emitting lasers (PCSELs) are capable of single-mode, high-power lasing over a large resonator area owing to two-dimensional resonance at a singularity point of the photonic band structure. Since the number of photons in the lasing mode in PCSELs are much larger than those in conventional semiconductor lasers, PCSELs are in principle suitable for coherent operation with a narrow spectral linewidth. In this paper, we numerically and experimentally investigate intrinsic spectral linewidths of 1-mm-diameter PCSELs under continuous-wave (CW) operation, and we demonstrate CW operation with 1-kHz-class intrinsic linewidths and 5-W-class output power.

中文翻译：

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具有 1kHz 级本征线宽的高功率光子晶体表面发射激光器的演示

由于光子能带结构奇点处的二维谐振，光子晶体表面发射激光器（PCSEL）能够在大谐振器区域上产生单模、高功率激光。由于PCSEL中激光模式下的光子数量比传统半导体激光器中的光子数量要多得多，因此PCSEL原则上适合窄光谱线宽的相干操作。在本文中，我们通过数值和实验研究了 1 毫米直径 PCSEL 在连续波 (CW) 操作下的本征光谱线宽，并演示了具有 1 kHz 级本征线宽和 5 W 级输出功率的 CW 操作。