Circular cladding waveguides in Pr:YAG fabricated by femtosecond laser inscription:Raman, luminescence properties and guiding performance

被引：3

作者：

Quanxin Yang ^{[1
]}

Hongliang Liu ^{[1
,2
,3
]}

Shan He ^{[1
]}

Qingyu Tian ^{[4
]}

Bin Xu ^{[4
]}

Pengfei Wu ^{[1
,5
]}

机构：

[1] Institute of Modern Optics, Nankai University

[2] Tianjin Key Laboratory of Optoelectronic Sensor and Sensing Network Technology

[3] State Key Laboratory of Crystal Materials, Shandong University

[4] Department of Electronic Engineering, Xiamen University

[5] Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology

来源：

Opto-Electronic Advances | 2021年 / 4卷 / 02期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

femtosecond laser inscription; cladding waveguides; Pr:YAG crystal; luminescence emission;

D O I：

暂无

中图分类号：

TN244 [激光材料及工作物质];

学科分类号：

0805 ; 080502 ;

摘要：

We report on the fabrication of circular cladding waveguides with cross-section diameters of 60-120 μm in Pr:YAG crystal by applying femtosecond laser inscription. The fabricated waveguides present 2 D guidance on the cross-section and fairly low propagation losses. Multiple high-order guiding modes are observed in waveguides with different diameters.Corresponding simulation results reveal the origin of a specific kind of guiding modes. Confocal micro-Raman(μ-Raman)experiments demonstrate the modification effects in femtosecond laser affected areas and ascertain the refractive index induced guiding mechanism. In addition, luminescence emission properties of Pr3+ions at waveguide volume are well preserved during the femtosecond laser inscription process, which may result in a potential high-power visible waveguide laser.

引用

页码：12 / 18

页数：7

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