Author Affiliations
Abstract
College of Electrical and Information Engineering, Quzhou University, Quzhou 324000, China
An immersed liquid cooling slab laser is demonstrated with deionized water as the coolant and a Nd:YAG slab as the gain medium. Using waveguides, a highly uniform pump beam distribution is achieved, and the flow velocity distribution is also optimized in the channels of the gain module (GM). At various flow velocities, the convective heat transfer coefficient (CHTC) is obtained. Experimentally, a maximum output power of 434 W is obtained with an optical–optical efficiency of 27.1% and a slope efficiency of 36.6%. To the best of our knowledge, it is the highest output power of an immersed liquid cooling laser oscillator with a single Nd:YAG slab.
liquid cooling slab laser oscillator convective heat transfer coefficient Chinese Optics Letters
2023, 21(8): 081401
广西大学物理科学与工程技术学院, 广西 南宁 530004
从光传播基本理论和光栅衍射性质出发,研究了双光栅成像效应中的光能量传递,得到了确定汇合级光强的表达式。结合双光栅成像方程,分析了两光栅的衍射性质与成像位置对汇合级光能量的影响。分析表明汇合级光强与两光栅具体的衍射效率和双光栅成像时的位置密切相关。测量了三组不同类型双光栅成像系统的汇合级光能量,实验结果和理论分析基本一致。
衍射与光栅 双光栅成像 汇合光谱 汇合光能量
