We present the design for a double-sided cooling of a thin-disk laser crystal using transparent, convex-shaped heat spreaders. The thermal contact between laser crystal and heat spreaders is established without bonding by solely applying an axial compressive force. A model of the contact behavior taking into account the deformation of the surfaces of the heat spreaders due to bending under mechanical loading is presented. The scope and accuracy of the modeling is verified by numerical simulations using the finite-element method. Based on the modeling, an exemplary design of the heat spreader which has been used for the first experimental demonstration of this concept is carried out. Based on the model, an almost ideal scalability of the heat transfer coefficient is predicted.

我们展示了使用透明凸形散热器对薄盘激光晶体进行双面冷却的设计。激光晶体和散热器之间的热接触是通过仅施加轴向压缩力而无需粘合而建立的。提出了一个接触行为模型，考虑了由于机械负载下的弯曲而导致的散热器表面变形。使用有限元方法通过数值模拟验证了建模的范围和准确性。基于建模，对散热器进行了示例性设计，该设计已用于该概念的首次实验演示。基于该模型，预测了传热系数的近乎理想的可扩展性。