Y. Kato, M. Terada, H. Kiriyama, M. Yamanaka, Y. Izawa, S. Nakai, T. Kanzaki, H. Miyajima, M. Miyamoto, H. Kan
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引用次数: 0
摘要
为了获得高效、高平均功率、高光束质量的激光器，提出了一种利用90度石英旋转器泵浦八通1064 nm Nd:YAG锯齿形板状激光放大器的新型激光结构。以100 W (1 kHz)级模块为例，验证了该新概念的基本性能:平均功率为68 W，激光模式体积的能量提取效率高达61%，单通初始信号增益为3.03，光束质量优异，热透镜补偿为热双折射，可忽略。
A novel laser architecture of laser-diode pumped eight pass 1064-nm Nd:YAG zig-zag slab laser amplifier with thermal birefringence compensation by use of a 90 degree quartz rotator has been developed aiming to achieve a high average power laser with high efficiency and good beam quality. With a 100 W (1 kHz) class module, the basic performance of the novel concept was examined by demonstrating an average power of 68 W with a high energy extraction efficiency of 61% for the laser mode volume at an initial small signal gain of 3.03 on single pass, and an excellent beam quality, undernegligible thermal lensing with the compensation for thermal birefringence.
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