Chinese Optics Letters, 2010, 8 (2): 217, Published Online: Mar. 5, 2010
Numerical simulations of the impact of wavefront phase distortions of pump on the beam quality of OPA 
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光束质量 波前相位畸变 光参量放大 190.4410 Nonlinear optics, parametric processes 190.4970 Parametric oscillators and amplifiers 140.4480 Optical amplifiers
Abstract
A numerical model of optical parametric amplification (OPA) is introduced to investigate the impact of wavefront phase distortion of pump on the beam quality of signal. Numerical results show that the unidentical walk-off directions of the pump and the idler waves are the main factors leading to the transfer of wavefront phase distortions of the pump to the signal, and by reducing the angle between the two directions, the beam quality factor (M<sup>2</sup>) can be greatly decreased and hence the good beam quality of the signal can be maintained.
Fuling Zhang, Yanhai Wang, Meizhi Sun, Qunyu Bi, Xinglong Xie, Zunqi Lin. Numerical simulations of the impact of wavefront phase distortions of pump on the beam quality of OPA[J]. Chinese Optics Letters, 2010, 8(2): 217.
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