Hexagonal rare-earth-doped double-clad chalcogenide glass fiber with high absorption efficiency

被引：2

作者：

Wu, Guolin ^{[1
,2
]}

Wang, Jun ^{[1
,2
]}

Wang, Jinjing ^{[1
,2
]}

Feng, Zan ^{[1
,2
]}

Sheng, Junkai ^{[1
,2
]}

Sun, Weilu ^{[1
,2
]}

Wang, Yuze ^{[1
,2
]}

Wang, Xiange ^{[1
,2
]}

Jiao, Kai ^{[1
,2
]}

Zhao, Zheming ^{[3
]}

Bai, Shengchuang ^{[1
,2
]}

Wang, Xunsi ^{[1
,2
,4
]}

Nie, Qiuhua ^{[1
,2
]}

Zhang, Junjie ^{[5
]}

机构：

[1] Ningbo Univ, Coll Informat Sci & Engn, Res Inst Adv Technol, Lab Infrared Mat & Devices, Ningbo 315211, Peoples R China

[2] Key Lab Photoelect Mat & Devices Zhejiang Prov, Ningbo 315211, Peoples R China

[3] Jiaxing Univ, Nanhu Coll, Jiaxing 314001, Peoples R China

[4] Ningbo Inst Oceanog, Ningbo 315832, Peoples R China

[5] China Jiliang Univ, Coll Opt & Elect Technol, Hangzhou 310018, Peoples R China

来源：

OPTICAL MATERIALS EXPRESS | 2022年 / 12卷 / 02期

基金：

中国国家自然科学基金;

关键词：

PUMP ABSORPTION; FABRICATION; AMPLIFIERS; LASER;

D O I：

10.1364/OME.450381

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The difficulty in the preparation of high-quality rare-earth-doped double-clad chalcogenide glass fiber with high absorption of pumping energy is one of the major issues in the development of mid-infrared fiber lasers. In this study, we solve this problem by changing the inner cladding structure of the fiber. The absorption efficiencies of several typical inner cladding shapes were compared and analyzed by the ray tracing method. The result shows that the hexagonal inner cladding fiber has the best absorption efficiency. For the first time, we developed an Er3+-doped Ge-Ga-Sb-S double-clad chalcogenide glass fiber with a hexagonal inner cladding via the fiber extrusion method, and experimentally demonstrated a higher absorption efficiency in the fiber compared with those in the traditional circular double-clad fibers. Such a hexagonal double-clad chalcogenide glass fiber possesses the potentials for developing high-efficiency mid-infrared fiber lasers.

引用

页码：436 / 443

页数：8

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