Femtosecond laser direct writing of few-mode depressed-cladding waveguide lasers

被引：35

作者：

Jia, Yuechen ^{[1
,2
]}

He, Ruiyun ^{[2
]}

Vazquez de Aldana, Javier R. ^{[3
]}

Liu, Hongliang ^{[4
,5
]}

Chen, Feng ^{[2
]}

机构：

[1] INRS Energie Mat & Telecommun, 1650 Blvd Lionel Boulet, Varennes, PQ J3X 1S2, Canada

[2] Shandong Univ, State Key Lab Crystal Mat, Sch Phys, Jinan 250100, Shandong, Peoples R China

[3] Univ Salamanca, Grp Invest Aplicac Laser & Foton, E-37008 Salamanca, Spain

[4] Nankai Univ, Inst Modern Opt, Tianjin 300350, Peoples R China

[5] Tianjin Key Lab Optoelect Sensor & Sensing Networ, Tianjin 300071, Peoples R China

来源：

OPTICS EXPRESS | 2019年 / 27卷 / 21期

基金：

中国国家自然科学基金;

关键词：

ORBITAL ANGULAR-MOMENTUM; NDYVO4; GRAPHENE; CRYSTAL; TEMPERATURE; GENERATION; CERAMICS;

D O I：

10.1364/OE.27.030941

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on mirrorless laser operation of Nd:YVO4 single- and double-cladding waveguides fabricated by femtosecond laser direct writing. Fundamental- (LP01) and high-order-mode (LP03, LP05) guiding and lasing have been observed in waveguides with different geometries and sizes. Double-cladding waveguides exhibit good guiding and lasing performance via inheriting advantages respectively from individual single cladding. As a result, continuous-wave lasing with a threshold as low as 59 mW is obtained, depending on the optical feedback provided only by Fresnel reflections at the waveguide end faces. By using few-layer graphene as saturable absorber, passively Q-switched operation in fabricated waveguides is also achieved. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

引用

页码：30941 / 30951

页数：11

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