强激光与粒子束, 2009, 21 (8): 1276, 网络出版: 2009-12-02
利用脉冲负反馈压缩准分子激光脉冲
Excimer laser pulse compressed with pulse feedback
摘要
分析了准分子激光脉冲在放大过程中的展宽现象。将饱和开关技术应用于放电泵浦激光器放大腔的放大压缩,发展了脉冲负反馈饱和压缩技术。利用该技术在天光一号系统前端LPX-150激光器上成功获得能量100 mJ、脉宽10 ns的脉冲输出,其空间分布均匀性保持在3%以内。这证明该技术可与无阶梯诱导非相干技术联合使用,在保证光束均匀性基础上进行脉冲压缩。
Abstract
The broadening of excimer laser pulses during amplification was analysed.To attain a shorter laser pulse,a compressing technique called pulse negative feedback was developed with the gain saturation switch applied to the amplification in an discharge pumping excimer laser.Combined with the echelon-free induced spatial incoherence technique,it can output shorter pulses with the beam uniformity maintained.A 100 mJ,10 ns laser pulse was achieved in the LPX-150 excimer laser which acts as the laser source of the “heaven-I” system.The spatial uniformity of the pulse remained within 3%.
高智星, 汤秀章, 张海峰, 向益淮. 利用脉冲负反馈压缩准分子激光脉冲[J]. 强激光与粒子束, 2009, 21(8): 1276. Gao Zhixing, Tang Xiuzhang, Zhang Haifeng, Xiang Yihuai. Excimer laser pulse compressed with pulse feedback[J]. High Power Laser and Particle Beams, 2009, 21(8): 1276.