Ring solid-state Raman laser at 1538 nm

被引：15

作者：

Dashkevich, V. I. ^{[1
]}

Orlovich, V. A. ^{[1
]}

机构：

[1] Natl Acad Sci Belarus, BI Stepanov Inst Phys, Minsk 220072, BELARUS

来源：

LASER PHYSICS LETTERS | 2011年 / 8卷 / 09期

关键词：

pulsed solid-state Raman laser; ring resonator; eye-safe Stokes radiation; asymmetry of stimulated Raman scattering; unidirectional Raman oscillation; CONTINUOUS-WAVE; OUTPUT; POWER; GENERATION; OPERATION; CRYSTAL; FIBER;

D O I：

10.1002/lapl.201110049

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A ring KG(WO4)2 (KGW) Raman laser converting the multimode radiation of a Q-switched Nd:KGW pump laser oscillating on the F-4(3/2)-> I-4(13/2) transition into the first Stokes at 1538 nm has been demonstrated for the first time as far as we know. With a 22-mm crystal in each section of a three-mirror ring cavity, the Raman laser generates eye-safe radiation of energy similar to 7 mJ and duration similar to 15 ns. The beam divergence does not exceed 4.7 mrad. The conversion efficiency reaches similar to 20%, and the slope efficiency is similar to 42%. Upon elimination of the parasitic Stokes radiation induced by the Fresnel reflection from the AR-coated crystal ends in the opposite direction along the path of the pump beam the Raman laser provides unidirectional oscillation without using auxiliary optical elements. (C) 2011 by Astro Ltd. Published exclusively by WILEY-VCH Verlag GmbH & Co. KGaA

引用

页码：661 / 667

页数：7

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