关键词: 脉冲波形/
三阶相关/
超短激光脉冲/
单发次
English Abstract
A new technique for measuring single-shot ultrashort laser pulse
Xia Yan-Wen1,Shen Miao1,2,
Sun Zhi-Hong1,
Peng Zhi-Tao1,
Lu Zong-Gui1,
Zhou Song1,
Zhang Bo1,
Su Jing-Qin1
1.Research Center of Laser Fusion, China Academy of Engineering Physics, Mianyang 621900, China;
2.Graduate School of Chinese Academy of Engineering Physics, Mianyang 621900, China
Fund Project:Project supported by the National Natural Science Foundation of China (Grant No.61377102) and the National Defense Industrial Technology Development Program of China (Grant No.B1520133010).Received Date:19 September 2016
Accepted Date:19 November 2016
Published Online:05 February 2017
Abstract:A new triple correlation technique for measuring intensity profile of single-shot ultrashort laser pulse is described. The technique uses two consecutive second-order nonlinear interactions of replicas of the pulse for generating a two-coordinate output intensity distribution that corresponds to a third-order correlation function and offers advantages over the previously techniques such as frequency-resolved optical gating, self-referencing spectral phase interferometry for direct field reconstruction because it requires no additional spectral information to profile the pulses. This intensity distribution is recorded, and the pulse profile can be obtained by analytical calculation. Combining the reconstructed intensity profile with its corresponding optical spectrum, the exact phase variation in time can be recovered with Gerchberg-Saxton algorithm through an iterative calculation.
Keywords: intensity profile/
triple correlation/
ultrashort laser pulse/
single-shot
