High-power, continuous-wave, second-harmonic generation at 532 nm in periodically poled KTiOPO4

被引：45

作者：

Samanta, G. K. ^{[1
]}

Kumar, S. Chaitanya ^{[1
]}

Mathew, M. ^{[1
]}

Canalias, C. ^{[2
]}

Pasiskevicius, V. ^{[2
]}

Laurell, F. ^{[2
]}

Ebrahim-Zadeh, M. ^{[1
,3
]}

机构：

[1] ICFO, Barcelona 08860, Spain

[2] Royal Inst Technol, S-10691 Stockholm, Sweden

[3] Inst Catalana Recerca & Estudis Avancats, Barcelona 08010, Spain

来源：

OPTICS LETTERS | 2008年 / 33卷 / 24期

关键词：

D O I：

10.1364/OL.33.002955

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report efficient generation of high-power, cw, single-frequency radiation in the green in a simple, compact configuration based on single-pass, second-harmonic generation of a cw ytterbium fiber laser at 1064 nm in periodically poled KTiOPO4. Using a crystal containing a 17 mm single grating with period of 9.01 mu m, we generate 6.2 W of cw radiation at 532 nm for a fundamental power of 29.75 W at a single-pass conversion efficiency of 20.8%. Over the. entire range of pump powers, the generated green output is single frequency with a linewidth of 8.5 MHz and has a TEM00 spatial profile with M-2 < 1.34. The demonstrated green power can be further improved by proper thermal management of crystal heating effects at higher pump powers and also by optimized design of the grating period to include thermal issues. (C) 2008 Optical Society of America

引用

页码：2955 / 2957

页数：3

共 11 条

[1] Nucleation and growth of periodic domains during electric field poling in flux-grown KTiOPO4 observed by atomic force microscopy -: art. no. 032905 [J].