中国激光, 2006, 33 (suppl): 34, 网络出版: 2006-04-21
采用偏振合成技术单脉冲能量达8.5 J的高峰值功率固体激光器
Single Pulse Energy 8.5 J High Peak Power Solid State Laser Using Polarized Combination
激光器 Nd:YAG固体激光器 大能量 升压式Q开关 光束合成 lasers Nd:YAG solid state laser large energy Q-switch of pulse drives beam combination
摘要
研究了高峰值功率大能量Nd:YAG固体激光器的主要技术问题。采用圆棒状激光工作物质实现高峰值功率大能量激光输出,并分析了该方案的部分技术细节。介绍了双KD*P晶体升压式Q开关的工作特点;阐述了双通道六级行波功率放大器的工作特性;利用激光束偏振特性进行了双光束45°偏振合成。实验实现了在重复频率20.0 Hz时,单脉冲输出能量≥8.5 J,脉冲宽度13.9 ns,光束质量M2≤3.99,能量不稳定度≤0.5%。
Abstract
The primary technical issues of high peak power and large energy Nd:YAG solid state laser are researched. A pair of Nd:YAG rods are used to realize the above laser, and some techniques are discussed in detail. Characteristics of the Q-switch of pulse drives with KD*P crystals and the double-channel 6-step traveling-wave power amplifier are presented, inspectively. The 45° beam polarized combination of two Nd:YAG lasers using polarization coatings are completed. The experimental results are presented: at 20.0 Hz, output energy exceeding 8.5 J per pulse, pulse width 13.9 ns, beam quality M2≤3.99 and energy unstabllity degree less than 0.5%.
王克强, 韩隆, 唐晓军, 吕华昌. 采用偏振合成技术单脉冲能量达8.5 J的高峰值功率固体激光器[J]. 中国激光, 2006, 33(suppl): 34. 王克强, 韩隆, 唐晓军, 吕华昌. Single Pulse Energy 8.5 J High Peak Power Solid State Laser Using Polarized Combination[J]. Chinese Journal of Lasers, 2006, 33(suppl): 34.
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