各向同性半导体单片波导中的0型二阶非线性相互作用。

Type-0 second order nonlinear interaction in monolithic waveguides of isotropic semiconductors.

作者信息

Abolghasem Payam, Han Junbo, Bijlani Bhavin J, Helmy Amr S

机构信息

The Edward S Rogers Sr Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario M5S 3G4, Canada.

出版信息

Opt Express. 2010 Jun 7;18(12):12681-9. doi: 10.1364/OE.18.012681.

DOI:10.1364/OE.18.012681

PMID:20588396

Abstract

We report the observation of type-0 phase-matching in bulk z-grown Al(x)Ga(1-x)As Bragg reflection waveguides where TM-polarized second-harmonic is generated using TM-polarized pump. For a pulsed pump with 1.8 ps temporal width and an average power of 3.3 mW, secondharmonic power of 16 microW was detected at 1567.8 nm. The normalized nonlinear conversion efficiency was obtained to be 2.84 x 10(3) %W(-1)cm(-2) in a 2.2 mm long waveguide. The highly versatile modal birefringence in Bragg reflection waveguides enabled the phase-matching of the three modalities; namely type-0 TM(omega)-->TM(2omega), type-I TE(omega)-->TM(2omega) and type-II TE(omega)+TMomega-->TE(2omega) interactions to simultaneously take place within a spectral bandwidth as small as 17 nm.

摘要

我们报告了在体生长的z向Al(x)Ga(1 - x)As布拉格反射波导中0型相位匹配的观测结果，其中使用TM偏振泵浦产生TM偏振二次谐波。对于具有1.8 ps时间宽度和3.3 mW平均功率的脉冲泵浦，在1567.8 nm处检测到16 μW的二次谐波功率。在2.2 mm长的波导中，归一化非线性转换效率为2.84×10³%W⁻¹cm⁻²。布拉格反射波导中高度通用的模式双折射实现了三种模式的相位匹配；即0型TM(ω)→TM(2ω)、I型TE(ω)→TM(2ω)和II型TE(ω)+TM(ω)→TE(2ω)相互作用在小至17 nm的光谱带宽内同时发生。