Effect of pump depletion on second harmonic generation in multiple quasi-phase-matching gratings

被引：6
|
作者：
Zhao, Li-Ming [1 ]
Yue, Gui-Kuan [2 ]
Zhou, Yun-Song [1 ]
Wang, Fu-He [1 ]
机构：
[1] Capital Normal Univ, Dept Phys, Ctr Theoret Phys, Beijing 100048, Peoples R China
[2] Univ British Columbia, Dept Mat Engn, Vancouver, BC V6T 1Z4, Canada
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 15期
基金：
中国国家自然科学基金;
关键词：
APERIODIC OPTICAL SUPERLATTICES; CRYSTALS;
D O I：
10.1364/OE.21.017592
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Second harmonic generation (SHG) from the aperiodic optical superlattice (AOS) in considering the pump depletion is investigated. It is found the domain configuration designed in undepleted pump approximation (UPA) can also be used to achieve multiple wavelength SHGs with high enough conversion efficiency for an exact solution. The applicable scope of UPA was estimated by a relative tolerance based on the related SHG conversion efficiency calculated in UPA and an exact solution. Results reveal that the relative tolerance is solely determined by the conversion efficiency, and unrelated to the sample configuration, pump intensity, incidental wavelength and nonlinear media. A model to evaluate an exact solution is proposed, and it is suggested that the SHG conversion efficiency can be easily assessed by the developed model. These results can be used to provide direct guidance for practical application, and can also make the estimation of practical samples more convenient. (C) 2013 Optical Society of America
引用
收藏
页码：17592 / 17601
页数：10
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