Direct generation of orthogonally polarized dual-wavelength continuous-wave and passively Q-switched vortex beam in diode-pumped Pr:YLF lasers

被引：31

作者：

Tian, Qingyu ^{[1
]}

Xu, Bin ^{[1
,2
]}

Li, Nan ^{[1
]}

Luo, Zhengqian ^{[1
]}

Xu, Huiying ^{[1
]}

Cai, Zhiping ^{[1
]}

机构：

[1] Xiamen Univ, Dept Elect Engn, Xiamen 361005, Fujian, Peoples R China

[2] Xiamen Univ, Shenzhen Res Inst, Shenzhen 518057, Guangdong, Peoples R China

来源：

OPTICS LETTERS | 2019年 / 44卷 / 22期

基金：

中国国家自然科学基金;

关键词：

GAUSSIAN-BEAM; EFFICIENT; NM; CW;

D O I：

10.1364/OL.44.005586

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on direct generation of an orthogonally polarized dual-wavelength vortex laser, for the first time to our knowledge, by means of a diode-pumped V-shaped Pr:YLF laser platform. A method of misaligning the folded mirror is proposed to realize the simultaneous orthogonally polarized dual-wavelength laser, while a method of orthogonally rotating the laser gain medium is proposed to generate an intracavity vortex beam (LG(01) mode). With the two methods, in continuous-wave (CW) mode, we have achieved simultaneous lasing of an orthogonally polarized dual-wavelength vortex laser at 604 and 607 nm with maximum output power of 237.7 mW. Moreover, based on this operation, a simultaneous orthogonally polarized dual-wavelength passively Q-switched vortex laser is also realized by inserting a Co:ASL crystal into the laser resonator as a saturable absorber. This work provides the simplest way for direct generation of an orthogonally polarized dual-wavelength vortex laser for potential applications. (C) 2019 Optical Society of America

引用

页码：5586 / 5589

页数：4