5%MgO:PPLN 的角度准相位匹配实验和精确 Sellmeier 方程的确定。

Angular quasi-phase-matching experiments and determination of accurate Sellmeier equations for 5%MgO:PPLN.

机构信息

Institut Néel CNRS/UJF, 25 rue des Martyrs, BP 166, F38402 Grenoble Cedex 9, France.

出版信息

Opt Lett. 2009 Sep 1;34(17):2578-80. doi: 10.1364/OL.34.002578.

DOI:10.1364/OL.34.002578

PMID:19724495

Abstract

We validated the theory of angular quasi-phase-matching (AQPM) by performing measurements of second-harmonic generation and difference-frequency generation. A nonlinear least-squares fitting of these experimental data led to refine the Sellmeier equations of 5%MgO:PPLN that are now valid over the complete transparency range of the crystal. We also showed that AQPM exhibits complementary spectral ranges and acceptances compared with birefringence phase matching.

摘要

我们通过测量二次谐波产生和差频产生验证了角准相位匹配（AQPM）的理论。对这些实验数据进行非线性最小二乘拟合，从而改进了 5%MgO:PPLN 的Sellmeier 方程，使其现在在晶体的整个透明范围内有效。我们还表明，与双折射相位匹配相比，AQPM 具有互补的光谱范围和可接受性。