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Aotian Wang

at Shanghai Institute of Optics & Fine Mechanics CAS

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Proceedings Article | 6 June 2021 Paper

High-efficiency amplification of non-principal plane of yttrium calcium oxyborate

Liming Chen, Lianghong Yu, Jinfeng Li, Aotian Wang, Xiaoyan Liang, Ruxin Li, Zhizhan Xu

Proceedings Volume 11849, 118490B (2021) https://doi.org/10.1117/12.2598244

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High-efficiency and broadband OPCPA is one of the methods to achieve multi-petawatt or even hundreds petawatt laser system.We demonstrate broadband OPCPA centered near 800 nm in 3D space of YCOB. A maximum conversion efficiency of ~15% and compressed duration of 30.6 fs are achieved for two types of YCOB crystals with PM on the principal and non-principal planes (NPP). The amplified energies and conversion efficiencies of different PM angles confirm that the effective nonlinear coefficient (deff) on the NPP is much higher than that on the principal plane (PP). It is worth studying on PM in 3D space to support higher deff, wider amplification bandwidths, and gain wavelength ranges that cannot be amplified on the PP of nonlinear crystals. OPCPA in the 3D space of nonlinear crystal can be used as amplifiers in petawatt scale or few-cycle high-power laser systems.

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