Amplification of high power short pulse excimer laser with beam smoothing

被引：1
|
作者：
Zhao X.-Q. [1 ]
Liu J.-R. [1 ]
Yi A.-P. [1 ]
Xue Q.-X. [1 ]
Hua H.-Q. [1 ]
Qian H. [1 ]
Zheng G.-X. [1 ]
Hu Y. [1 ]
Zhang Y.-S. [1 ]
Huang K. [1 ]
Huang C. [1 ]
Yu L. [1 ]
机构：
[1] State Key Laboratory of Laser Interaction with Matter, Northwest Institute of Nuclear Technology
来源：
Guangxue Jingmi Gongcheng/Optics and Precision Engineering | 2011年 / 19卷 / 02期
关键词：
Beam smoothing; Excimer laser; High power laser; Laser amplification;
D O I：
10.3788/OPE.20111902.0397
中图分类号：
学科分类号：
摘要：
The combination of optical angular mutiplexing and Echelon Free Induced Spatial Incoherence (EFISI) is a best choice for the pulse compression and beam smoothing in a high power excimer laser system, which relates to the transportation and amplification of smoothed narrow laser pulse mainly. In this paper, the construction of a partial coherence oscillator by scattering method was described and primary results for pulse shaping were provided. Then, the gain characteristics for five laser amplifiers by single-pass amplifications and simulations of different output couplings were discussed, and measures to control over Amplification Spontaneous Emission (ASE) in the short laser pulse amplification was described. Finally, the Main Oscilation Power Amplifer(MOPA) chain of a single-beam XeCl laser and primary results were introduced. Obtained results show that the final output energy is 5-6 J with a pulsewidth around 10 ns and the focal spot is around 300 μm in the diameter. These results indicate that the laser chain and optical design are reasonable, which can be used as a good guide for the specific design of full scale angular multiplexed laser MOPA system.
引用
收藏
页码：397 / 406
页数：9
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