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Proceedings Paper

Improvement of temporal contrast by 2 order of magnitude based on the deformable mirrors
Author(s): Bo-peng Wang; De-en Wang; Kai-nan Zhou; Jing-qin Su; Yan-lei Zuo; Xiao-ming Zeng; Qihua Zhu; Jing Wen; Na Xie; Xiao-dong Wang; Feng Jing
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Paper Abstract

Chirp pulse amplification (CPA) has been promoted as an effective way to explore the intensity frontier. High order dispersion induced by the stretcher and materials in the CPA system, which deteriorates both the pulse duration and temporal contrast, however, can not be absolutely compensated by the compressor. Placed at the Fourier plane of a 4f zero-dispersion stretcher consisting of a grating, the deformable mirror (DM) has been demonstrated as the modulator to compensate high order dispersion. Using the method of ray tracing, the relation between spectrum and position on DM has been obtained. It shows that the resolution of the deformable mirror can be controlled by adjusting the focal length and incident angle. We have simulated a typical Ti:sappire CPA system to revise the spectral phase by the DM. The result illustrates that if the spectral phase can be compensated, the temporal contrast will be improved by 2 order of magnitude.

Paper Details

Date Published: 3 February 2015
PDF: 5 pages
Proc. SPIE 9255, XX International Symposium on High-Power Laser Systems and Applications 2014, 925517 (3 February 2015); doi: 10.1117/12.2065211
Show Author Affiliations
Bo-peng Wang, China Academy of Engineering Physics (China)
Univ. of Science and Technology of China (China)
De-en Wang, China Academy of Engineering Physics (China)
Kai-nan Zhou, China Academy of Engineering Physics (China)
Jing-qin Su, China Academy of Engineering Physics (China)
Yan-lei Zuo, China Academy of Engineering Physics (China)
Xiao-ming Zeng, China Academy of Engineering Physics (China)
Qihua Zhu, China Academy of Engineering Physics (China)
Jing Wen, China Academy of Engineering Physics (China)
Na Xie, China Academy of Engineering Physics (China)
Xiao-dong Wang, China Academy of Engineering Physics (China)
Feng Jing, China Academy of Engineering Physics (China)


Published in SPIE Proceedings Vol. 9255:
XX International Symposium on High-Power Laser Systems and Applications 2014
Chun Tang; Shu Chen; Xiaolin Tang, Editor(s)

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