Shortening of KrF Excimer Laser Pulses by Optical Gain Switching Method
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摘要: 为提高激光作用于靶上的功率密度和耦合效率,需对目前的激光进行脉宽压缩。本工作采用饱和增益开关法,利用预放大器的放大特性对前端输出的非相干光进行了脉宽压缩,最后将脉宽为23 ns的种子光压缩到了12 ns,且可根据需要在5~20 ns内变化。Abstract: In order to increase the intensity on target and the coupling efficiency, it is necessary to shorten the bandwidth of laser pulse. An optical gain switching method is adopted. As a result, the pulse width is shortened to 12 ns from 23 ns, and it can also be varied from 5 to 20 ns by simply changing the delay between the pulses.
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Keywords:
- ntensity ,
- coupling efficiency ,
- optical gain switching ,
- pulse width shortening
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[1] 吕百达. 强激光的传输与控制[M]. 北京:国防工业出版社,1999: 274-277. [2] 王淦昌,袁之尚. 惯性约束核聚变[M]. 安徽:安徽教育出版社,1995: 172-188. [3] OWADANA Y,OKUDA I,MATSUMOTO Y, et al. Performance of the ASHURA KrF laser and its upgrading plan [J]. Power Laser and Particle Beams, 1993,11(2): 347-351.
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