一种基于结晶聚四氟乙烯的Nd:YAG端泵浦曲折平板增益模块的特殊结构以及一种用于泵浦光束传输的特定光学系统。

An especial configuration for an Nd:YAG end-pumped zigzag slab gain module based on crystalline polytetrafluoroethylene and a specific optical system for pump-beam delivery.

作者信息

Majidof Mohammad Mahdi, Latifi Hamid, Tanhaee Ehsan, Nabavi Seyed Hassan

出版信息

Opt Express. 2020 May 11;28(10):15207-15220. doi: 10.1364/OE.383483.

Abstract

This work experimentally introduces a new single-crystal Nd:YAG end-pumped zigzag slab (EPZS) gain module based on a thin polytetrafluoroethylene (PTFE) sheet as a total internal reflection (TIR) protection layer. In this gain module, a specific optical pump-beam delivery (OPBD) system is used to improve the output beam quality (BQ) of the slab amplifier from 9.4 in a typical OPBD system to 4.7 with the total pump power of 2400 W. The average logarithmic small-signal gain (g0l) in the 0.06% Nd:YAG EPZS gain module at the laser beam incident angle of 7.1° was obtained around 0.64 for the two OPBD systems mentioned above.

摘要

这项工作通过实验引入了一种新型的基于薄聚四氟乙烯（PTFE）片作为全内反射（TIR）保护层的单晶钕：钇铝石榴石端面泵浦之字形板条（EPZS）增益模块。在该增益模块中，采用了一种特定的光泵浦光束传输（OPBD）系统，将板条放大器的输出光束质量（BQ）从典型OPBD系统中的9.4提高到了4.7，总泵浦功率为2400W。对于上述两种OPBD系统，在激光束入射角为7.1°时，0.06%钕：钇铝石榴石EPZS增益模块中的平均对数小信号增益（g0l）约为0.64。