频带色散法改善宽线宽激光受激布里渊散射效果的实验研究  

Experimental Investigation of Broadband Laser′s SBS Based on Frequency-Band-Dispersing Method

作　　者：葛传文[1] 张为俊[1] 陈长水[1] 王沛[1] 苏红[1] 汪震[1] 杭寅[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所激光光谱学开放实验室,合肥230031

出　　处：《光学学报》2001年第12期1454-1457,共4页Acta Optica Sinica

基　　金：国家科委 86 3高科技计划资助课题

摘　　要：利用频带色散法 ,让宽线宽、多横模电光调QCr∶LiSAF激光输出脉冲经过多个色散棱镜 ,频带被色散后 ,再聚焦到装有CS2 散射介质的池中 ,产生后向受激布里渊散射 ,脉宽的压缩率较大 ,约为 5倍。与无色散棱镜情况相比 ,阈值能量有所降低 ,并能很有效地改善抽运激光的光束质量。With a broadband multimode electro-optically Q-switched Cr:LiSAF laser pulse passing through several dispersion prisms, its frequency band is dispersed. Then by focusing it into CS2 cell the backward stimulated Brillouin scattering is produced. Experimental results show that in comparison with case of no-dispersing prism frequency-band-dispersing method can efficiently reduce the broadband SBS energy threshold, raise pulse width compression ratio by more than 5 times, and improve beam quality of pump light.

关 键 词：宽线宽激光 实验研究 频带色散法 受激布里渊散射 脉宽压缩 高光束质量 

分 类 号：O437.2[机械工程—光学工程]