Comparison among QPCPA, Ti:Sapphire CPA and OPCPA. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Comparison among QPCPA, Ti:Sapphire CPA and OPCPA.

Caption

In CPA, the pump amplifies the signal through an energy-level gain medium system in which one of the transitions is non-radiative. This kind of laser amplification has a high efficiency from the pump to signal and a relatively narrow gain bandwidth. In OPCPA, the pump amplifies the signal through parametric interaction and simultaneously generates the idler wave. OPCPA can be broadband by manipulating the phase-matching condition but suffers from a relatively low efficiency due to back conversion. QPCPA is a variation of OPCPA by dissipating the idler with strong crystal absorption. The idler dissipation obstructs the back conversion effect and enables both high efficiency and large bandwidth.

Credit

by Jingui Ma, Kainan Xiong, Peng Yuan, Xiaoniu Tu, Jing Wang, Guoqiang Xie, Yanqing Zheng, Liejia Qian

Usage Restrictions

Credit must be given to the creator.

License

CC BY

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