Optimization for high-energy and high-efficiency broadband optical parametric chirped-pulse amplification in LBO near 800  nm

In this Letter, we present a study of high-energy and high-conversion-efficiency broadband optical parametric chirped-pulse amplification (OPCPA) system with a 100  mm×100  mm×17  mm LBO crystal near 800 nm. The results showed that the back-conversion was sensitively affected by the pump intensity a...

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Bibliographic Details
Published in:Optics letters 2015-07, Vol.40 (14), p.3412-3415
Main Authors: Yu, Lianghong, Liang, Xiaoyan, Xu, Lu, Li, Wenqi, Peng, Chun, Hu, Zhanggui, Wang, Cheng, Lu, Xiaoming, Chu, Yuxi, Gan, Zebiao, Liu, Xiaodi, Liu, Yanqi, Wang, Xinliang, Lu, Haihe, Yin, Dingjun, Leng, Yuxin, Li, Ruxin, Xu, Zhizhan
Format: Article
Language:English
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Summary:In this Letter, we present a study of high-energy and high-conversion-efficiency broadband optical parametric chirped-pulse amplification (OPCPA) system with a 100  mm×100  mm×17  mm LBO crystal near 800 nm. The results showed that the back-conversion was sensitively affected by the pump intensity and the injected signal intensity. It occurred when the injected signal was above 0.82 J with a pump energy of 170 J, and this effect also reshaped the amplified spectrum. After optimization, an amplified energy of 45.3 J was achieved with a conversion efficiency of 26.3% by the OPCPA. The peak power of the hybrid CPA-OPCPA laser system reached 1.02 PW with a compressed duration of 32 fs, which is the first reported OPCPA peak power higher than 1 PW, to the best of our knowledge.
ISSN:0146-9592
1539-4794
DOI:10.1364/ol.40.003412