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Chin. Opt. Lett.
 Home  List of Issues    Issue 12 , Vol. 16 , 2018    10.3788/COL201816.121901

Analysis and evaluation of idler absorption for quasi-parametric chirped-pulse amplification
Dongxia Hu1;2, Yudong Tao2, Jingui Ma3, Jing Wang3, Heyuan Zhu1, and Liejia Qian3
1 Shanghai Engineering Research Center of Ultra-precision Optical Manufacturing, Department of Optical Science and Engineering, [Fudan University], Shanghai 200433, China
2 [Research Center of Laser Fusion, China Academy of Engineering Physics], Mianyang 621900, China
3 Key Laboratory for Laser Plasmas (Ministry of Education), Collaborative Innovation Center of IFSA (CICIFSA), Department of Physics and Astronomy, [Shanghai Jiao Tong University], Shanghai 200240, China

Chin. Opt. Lett., 2018, 16(12): pp.121901

Topic:Nonlinear optics
Keywords(OCIS Code): 190.4410  190.4970  

Quasi-parametric chirped-pulse amplification (QPCPA) can improve the signal amplification efficiency and stability by inhibiting the back-conversion, in which the idler absorption plays a critical role. This Letter theoretically studies the impacts of idler absorption on the QPCPA performance in both the small-signal and saturation regimes. We demonstrate that there exists an optimal idler absorption that enables the achievement of maximum pump depletion within a minimum crystal length. To overcome the reduction in small-signal gain induced by idler absorption, the configuration of gradient idler absorption is proposed and demonstrated as a superior alternative to constant idler absorption. The results provide guidelines to the design of state-of-the-art QPCPA lasers.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Posted online:2018/11/28

Get Citation: Dongxia Hu, Yudong Tao, Jingui Ma, Jing Wang, Heyuan Zhu, and Liejia Qian, "Analysis and evaluation of idler absorption for quasi-parametric chirped-pulse amplification," Chin. Opt. Lett. 16(12), 121901(2018)

Note: This work was partially supported by the National Natural Science Foundation of China (NSFC) (Nos. 61727820 and 11721091) and the Science and Technology Commission of Shanghai Municipality (No. 17YF1409100).


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