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

被引：22
|
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
收藏
页码：5586 / 5589
页数：4
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