The Nonlinear Ellipse Rotation in BK7 Glass Plate and its Application

Chunmei ZHANG; Jianliang WANG; Chuang LI; Xiaowei CHEN; Yuxin LENG; Lihuang LIN; Ruxin LI; Zhizhan XU

doi:10.2184/lsj.36.1105

Lasers and Laser Systems

The Nonlinear Ellipse Rotation in BK7 Glass Plate and its Application

Chunmei ZHANG, Jianliang WANG, Chuang LI, Xiaowei CHEN, Yuxin LENG, Lihuang LIN, Ruxin LI, Zhizhan XU

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Keywords: Contrast, Glass, Nonlinear ellipse rotation, Chirped pulse amplification

JOURNAL FREE ACCESS

2008 Volume 36 Issue APLS Pages 1105-1108

DOI https://doi.org/10.2184/lsj.36.1105

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Abstract

The intensity-dependent nonlinear ellipse rotation of high-energy femtosecond pulse in BK7 glass plate is researched experimentally. The polarization, spectrum and shape of the femtosecond pulse were studied in this process. Based on this scheme, we develop a pulse temporal cleaner, which has been used in our femtosecond chirped pulse amplification (CPA) laser to provide a contrast ratio improvement of 2 orders of magnitude for the milli-joule level fs input pulses. The total transmission efficiency of the cleaner reaches 16.7%.

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