光纤相位共轭的四通主振荡功率放大器系统实验研究
Experimental Study on MOPA System of Four-Pass Configuration with Optical Fiber Phase-Conjugator
1 浙江大学光电系, 浙江 杭州 310027
2 中国工程物理研究院应用电子技术研究所, 四川 绵阳 621900
摘要
报道了应用φ100 mm和φ200mm两种芯径光纤作为相位共轭镜时,四通放大主振荡功率放大器(MOPA)系统的SBS能量反射率、稳定性、保真度、输出能量等性能参量的变化趋势.应用φ100mm光纤时四通放大系统最大输出能量为6mJ,可以获得的最大反射率为41%,SBS能量阈值约为0.73 mJ;应用φ200mm光纤时可以获得最大激光输出能量为21mJ,可以获得的最大反射率为37%,SBS能量阈值约为1.1mJ.
Abstract
Using optical nber with diameter of 0100 mm and ¢200 mm as phase-coryugator, the energy reflectivity, stability, fidelity and output energy in ΜΟΡΑ system of four-pass configuration are presented Applying optical fiber of 0100 mm core diameter, 6 mJ output energy and 41% SBS reflectivity have been obtained, SBS threshold is 0.73 mJ. Applying optical fiber of 0200 nun core diameter, 21 mJ output energy and 37% SBS reflectivity have been obtained, SBS threshold is 1.1 mJ.
参考文献
[1] Κ. Tei, Μ. Kato, Υ. Niwa et al.. Diode-pumped 250-W zigzag slab Nd:YAG oscillator-amplifier system [J]. Opt. Lett., 1998, 23(7): 514-516
[2] U. Roth, Thomas Graf, E. Rochat et al.. Saturation, Gain, and Noise Properties of a Multipass Diode-Laser-Pumped Nd:YAG CW Amplifier [J]. IEEE J. Quantum Electron., 1998, 34(10): 1987-1991
[3] Wang Victor, Ginliano C. R. Correction of phase aberrations via stimulated Brillouin scattering[J]. Opt. Lett., 1978, 2(1):4-6
李东明, 周涛, 陈军, 唐淳, 高清松, 庞毓, 童立新, 卓有福. 光纤相位共轭的四通主振荡功率放大器系统实验研究[J]. 中国激光, 2004, 31(s1): 131. LI Dong-ming, ZHOU Tao, CHEN Jun, TANG Chun, GAO Qing-song, PANG Yu, TONG Li-xing, ZHUO You-fu. Experimental Study on MOPA System of Four-Pass Configuration with Optical Fiber Phase-Conjugator[J]. Chinese Journal of Lasers, 2004, 31(s1): 131.