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.
出处
《光学学报》
EI
CAS
CSCD
北大核心
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
