7 September 2011 Improving temporal contrast by cross-polarized wave generation at a sub-petawatt laser facility
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Abstract
Temporal contrast is an important factor affecting the application of ultraintense and ultrashort laser systems. In this paper, we employ cross-polarized wave (XPW) generation to improve the temporal contrast for ultraintense and ultrashort pulses in a 300 TW Ti:Sapphire laser facility, i.e. the super intense laser for experiment on the extremes (SILEX-I). We designed a double chirped-pulse amplification (CPA) system with an intermediate nonlinear temporal pulse filter based on XPW generation and the estimated output energy is more than 300 mJ for the new front-end system. The experimental results show that the output energy of the double CPA system is greater than 370 mJ. The amplified spontaneous emission (ASE) pedestal is suppressed significantly and the temporal contrast is improved by more than two orders of magnitude.
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Na Xie, Na Xie, Xiaodong Wang, Xiaodong Wang, Wanqing Huang, Wanqing Huang, Li Sun, Li Sun, Yi Guo, Yi Guo, Qing Li, Qing Li, Runchang Zhao, Runchang Zhao, Jingqin Su, Jingqin Su, } "Improving temporal contrast by cross-polarized wave generation at a sub-petawatt laser facility", Proc. SPIE 8130, Laser Beam Shaping XII, 813005 (7 September 2011); doi: 10.1117/12.891877; https://doi.org/10.1117/12.891877
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