High efficiency quasi-three level thin film laser enabled on a sinusoidal grating substrate

被引：3

作者：

Cui, Wenda ^{[1
,2
]}

Wang, Hongyan ^{[1
,2
]}

Han, Kai ^{[1
,2
]}

Hua, Weihong ^{[1
,2
]}

Xu, Xiaojun ^{[1
,2
,3
,4
]}

机构：

[1] Natl Univ Def Technol, Coll Optoelect Sci & Engn, Changsha 410073, Hunan, Peoples R China

[2] Natl Univ Def Technol, Interdisciplinary Ctr Quantum Informat, Changsha 410073, Hunan, Peoples R China

[3] Hunan Prov Key Lab High Energy Laser Technol, Changsha, Hunan, Peoples R China

[4] Hunan Prov Collaborat Innovat Ctr High Power Fibe, Changsha, Hunan, Peoples R China

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 04期

关键词：

ABSORPTION ENHANCEMENT; SPONTANEOUS EMISSION; BAND; OPTIMIZATION; DESIGN; LIGHT;

D O I：

10.1364/OE.25.004097

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The excitation and emission properties of optical materials can be adjusted by nanostructures and to achieve high optical efficiency in the optically pump laser, especially for lasers with short absorption length and high pump threshold. We present and theoretically investigate a Yb-doped thin film on a ID grating structure in this paper. High reflectivity at the pump and emission wavelength are realized simultaneously and in terms of the guided-mode resonance theory, the local field of high reflected light is enhanced which will increase the absorption of associated laser wavelength. We analyze parameters of the nanostructure in detail based on rigorous coupled-wave theory and an appropriate structure is decided. Finally, we demonstrate that this designed structure can effectively improve the optical efficiency of optically pump solid state laser. (C) 2017 Optical Society of America

引用

页码：4097 / 4105

页数：9

共 24 条

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