LD-pumped high-power CW Pr3+:YLF Laguerre-Gaussian lasers at 639 nm

被引：32

作者：

Lin, Xiuji ^{[1
]}

Chen, Mingpo ^{[1
]}

Feng, Qichen ^{[1
]}

Ji, Shuaihao ^{[1
]}

Cui, Shengwei ^{[2
,3
]}

Zhu, Yao ^{[1
]}

Xiao, Bo ^{[1
]}

Li, Wensong ^{[1
]}

Xu, Huiying ^{[1
]}

Cai, Zhiping ^{[1
]}

机构：

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

[2] Hebei Univ, Coll Phys Sci & Technol, Photon Informat Innovat Ctr, Baoding 071002, Peoples R China

[3] Hebei Univ, Coll Phys Sci & Technol, Hebei Prov Ctr Opt Sensing Innovat, Baoding 071002, Peoples R China

来源：

OPTICS AND LASER TECHNOLOGY | 2021年 / 142卷

基金：

中国国家自然科学基金;

关键词：

High-power lasers; Visible lasers; Vortex lasers; Pr3+:YLF lasers; DIRECT GENERATION; RED;

D O I：

10.1016/j.optlastec.2021.107273

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Based on a lowly-doped (0.12 at. %) Pr3+:YLF crystal, high-power continuous-wave (CW) lasers at 639 nm were obtained by laser-diode (LD) pumping. A maximum output power of 8.14 W with a total slope efficiency of 51.5% was achieved for the quasi-fundamental (or called quasi-zero-order Laguerre-Gaussian (LG(0)(0))) mode laser. A laser beam with a conventional Gaussian distribution was obtained for the first time at similar to 7 W output power level (the M-2 factors were 3.3 and 1.1 in the horizontal and vertical directions, respectively). CW vortex lasers (LG(0)(+1) and LG(0)(-1) ) with a maximum output power of 6.03 W were achieved by off-axis pumping. The total slope efficiency of the vortex laser was 56.3%. To the best of our knowledge, the output powers of the two types of lasers are the highest to date. Furthermore, theoretical models were built to explain the input-output power characteristics of the results and provide guidance to design high-power Laguerre-Gaussian lasers.

引用

页数：5

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