中国激光, 2004, 31 (s1): 415, 网络出版: 2013-01-29
提高主振-功率放大系统光束质量的实验研究
Experimental Study on Improving Beam Quality of MOPA System
激光技木 非线性光学 受激布里渊散射相位共轭镜 扭转模 laser technique nonlinear optics SBS phase-corgugate mirror twisted mode
摘要
设计了一套灯抽运的Nd:YAG主振-功率放大(MOPA)系统,在该系统中使用受激布里渊散射(SBS)相位共轭镜来提高光束质量,其中种子激光源为窄线宽的Cr4+:YAG被动调Q的扭转模激光器,使用两个放大级进行双程放大,在两个放大级之间采用像传递和90°旋光器补偿退偏,在相位共轭镜中采用CCl4,氟里昂112和CS2三种液体进行实验,并测量了SBS反射率和SBS保真度.MOPA系统在20 Hz的重复频率下工作,M2因子为1.6,脉宽为7ns,最大输出能量为600 mJ.
Abstract
A master oscillator power amplifier (ΜΟΡΑ) system was designed, SBS phase-conjugate mirror was used in the system, the seeder was a narrow-linewidth laser of twisted mode with Cr4+:YAG as passive Q-Switch, two amplifiers were used to pass twice, image-relay telescope and 900 rotator was used to compensate the depolarization bewteen amplifiers, three liquids of CCl4. FYeonll2 and CS2 were used in phase-conjugate mirror, SBS reflective rate and SBS fidelity were measured.
王之桐. 提高主振-功率放大系统光束质量的实验研究[J]. 中国激光, 2004, 31(s1): 415. WANG Zhi-tong. Experimental Study on Improving Beam Quality of MOPA System[J]. Chinese Journal of Lasers, 2004, 31(s1): 415.
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