TUNABLE QUASI-PHASE MATCHING USING DYNAMIC FERROELECTRIC DOMAIN GRATINGS INDUCED BY PHOTOREFRACTIVE SPACE-CHARGE FIELDS

被引：28

作者：

KEWITSCH, AS

SEGEV, M

YARIV, A

SALAMO, GJ

TOWE, TW

SHARP, EJ

NEURGAONKAR, RR

机构：

[1] UNIV ARKANSAS,DEPT PHYS,FAYETTEVILLE,AR 72701

[2] USA,FT BELVOIR,VA 22060

[3] ROCKWELL INT CORP,CTR SCI,THOUSAND OAKS,CA 91360

来源：

APPLIED PHYSICS LETTERS | 1994年 / 64卷 / 23期

关键词：

D O I：

10.1063/1.111349

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a method of dynamic, tunable quasi-phase matched second-harmonic generation using optically induced polarization gratings with periods equal to twice the coherence length. These gratings increase the peak second-harmonic conversion efficiency by a factor of 17 above a poled strontium barium niobate crystal, to 0.01% for fundamental beam intensities of 0.8 MW cm-2. We generate quasi-phase matching spectral response peaks as narrow as 0.175 nm and tailor the response by writing an ensemble of gratings in the same volume, each of which enhances the second-harmonic generation at a predetermined wavelength.

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页码：3068 / 3070

页数：3

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