Analysis of Improved Contrast froma Chirped Pulse Amplification Laser System by Increasing the Beam Size in the Stretcher

YANG Qingwei; GUO Ailin; XIE Xinglong; ZHANG Fuling; GAO Qi; LI Meirong; LIN Zunqi

Journals >Collection Of theses on high power laser and plasma physics >Volume 6 >Issue 1 >Page 69 > Article

Collection Of theses on high power laser and plasma physics
Vol. 6, Issue 1, 69 (2008)

Analysis of Improved Contrast froma Chirped Pulse Amplification Laser System by Increasing the Beam Size in the Stretcher

YANG Qingwei, GUO Ailin, XIE Xinglong, ZHANG Fuling, GAO Qi, LI Meirong, and LIN Zunqi

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[in Chinese]

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DOI: Cite this Article

YANG Qingwei, GUO Ailin, XIE Xinglong, ZHANG Fuling, GAO Qi, LI Meirong, LIN Zunqi. Analysis of Improved Contrast froma Chirped Pulse Amplification Laser System by Increasing the Beam Size in the Stretcher[J]. Collection Of theses on high power laser and plasma physics, 2008, 6(1): 69 Copy Citation Text

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Abstract

The impact of the stretcher on the contrast ratio of the out pulse is analyzed making use of the ray -tracing method , which is based on the contrast ratio model of chirped pulse.When the beam size in the stretcher is increased from 2 mm to 40 mm ,the contrast of the output pulse approximately increase two magnitude. When the input pulse is Sech2 ,the contrast of the output pulse is better than what the input pulse is Gassian or Rectangular.

Keywords

Chirped pulse amplification Contrast Pulse contrast ratio Pulse stretcher

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