Second-harmonic generation from a first-order quasi-phase-matched GaAs/AlGaAs waveguide crystal

被引：24
|
作者：
Rafailov, EU [1 ]
Loza-Alvarez, P
Brown, CTA
Sibbett, W
De La Rue, RM
Millar, P
Yanson, DA
Roberts, JS
Houston, PA
机构：
[1] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
[2] Univ Glasgow, Dept Elect & Elect Engn, Optoelect Res Grp, Glasgow G12 8LT, Lanark, Scotland
[3] Univ Sheffield, Dept Elect & Elect Engn, Sheffield S1 3JD, S Yorkshire, England
来源：
OPTICS LETTERS | 2001年 / 26卷 / 24期
关键词：
D O I：
10.1364/OL.26.001984
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate, for the first time to our knowledge, the generation of second-harmonic pulses by use of a novel methodology for achieving first-order quasi-phase matching in a semiconductor waveguide crystal. This methodology is based on a periodic modulation of the susceptibility coefficient along the direction of light-beam propagation in which advantage is taken of the fact that chi ((2))(GaAs) > chi ((2))(AlxGa1-xAs). Efficient second-harmonic generation at 975 mn of a pump wavelength of 1950 nm has been demonstrated for a crystal with a nonuniform domain dimension (duty cycle, similar to 39/61). (C) 2001 Optical Society of America.
引用
收藏
页码：1984 / 1986
页数：3
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