Abstract

The temporal contrast of high-peak-power lasers is usually limited by pre-pulses, which are generally produced by post-pulses due to the nonlinearity of the active medium. The reason for the conversion between pre-pulse and post-pulse is now well known, but the mechanisms for the delay-shift and asymmetric broadening of the newly generated pre-pulse are not yet clear. In this work, a novel, to the best of our knowledge, numerical model combining the nonlinear Schrödinger equation and the Frantz–Nodvik equation is proposed to investigate the underlying mechanisms for the “distortion” of the pre-pulse. Numerical results show that the gain characteristics of Ti:sapphire amplifiers can only make a minor change on the temporal profile of the pre-pulse, but the high-order dispersion is the main cause for the delay-shift and asymmetric broadening of the pre-pulse, and the effects are more significant for the initial post-pulse with a relatively larger delay.

© 2023 Optica Publishing Group

Research on the pre-pulses caused by post-pulses in the optical parametric chirped-pulse amplifier

Haidong Chen, Xinliang Wang, Xingyan Liu, Xun Chen, Peile Bai, Shuren Pan, Liang Hu, Jiabing Hu, Fenxiang Wu, Zongxin Zhang, Yanqi Liu, Yi Xu, and Yuxin Leng
Opt. Express 31(24) 40285-40292 (2023)

Investigation and suppression of pre-pulses on nanosecond time scale in the SULF-1PW laser

Peile Bai, Zongxin Zhang, Xinliang Wang, Fenxiang Wu, Jiabing Hu, Xiaojun Yang, Jiayi Qian, Jiayan Gui, Xiaoming Lu, Yanqi Liu, Yi Xu, Xiaoyan Liang, Yuxin Leng, and Ruxin Li
Appl. Opt. 61(15) 4627-4632 (2022)

Experimental investigation on the temporal contrast of pre-pulses by post-pulses in a petawatt laser facility

Hiromitsu Kiriyama, Yasuhiro Miyasaka, Akito Sagisaka, Koichi Ogura, Mamiko Nishiuchi, Alexander S. Pirozhkov, Yuji Fukuda, Masaki Kando, and Kiminori Kondo
Opt. Lett. 45(5) 1100-1103 (2020)

High-order dispersion control of 10-petawatt Ti:sapphire laser facility

Shuai Li, Cheng Wang, Yanqi Liu, Yi Xu, Yanyan Li, Xingyan Liu, Zebiao Gan, Lianghong Yu, Xiaoyan Liang, Yuxin Leng, and Ruxin Li
Opt. Express 25(15) 17488-17498 (2017)

High-spatiotemporal-quality petawatt-class laser system

Hiromitsu Kiriyama, Mori Michiaki, Yoshiki Nakai, Takuya Shimomura, Hajime Sasao, Momoko Tanaka, Yoshihiro Ochi, Manabu Tanoue, Hajime Okada, Shuji Kondo, Shuhei Kanazawa, Akito Sagisaka, Izuru Daito, Daisuke Wakai, Fumitaka Sasao, Masayuki Suzuki, Hideyuki Kotakai, Kiminori Kondo, Akira Sugiyama, Sergei Bulanov, Paul R. Bolton, Hiroyuki Daido, Shunichi Kawanishi, John L. Collier, Cristina Hernandez-Gomez, Chris J. Hooker, Klaus Ertel, Toyoaki Kimura, and Toshiki Tajima
Appl. Opt. 49(11) 2105-2115 (2010)