Generation of tunable vortex beams from a side-pumped Nd:YAG laser utilizing spot defect mirrors

被引：5

作者：

Chen, Hui ^{[1
,2
]}

Li, Xiaowei ^{[1
,2
]}

Cui, Yufan ^{[1
,2
]}

Zhang, Boyuan ^{[1
,2
]}

Chang, Xiaoyu ^{[1
,2
]}

Qi, Yaoyao ^{[1
,2
]}

Ding, Jie ^{[1
,2
]}

Yan, Bingzheng ^{[1
,2
]}

Wang, Yulei ^{[1
,2
]}

Lu, Zhiwei ^{[1
,2
]}

Zhu, Zhihan ^{[3
]}

Bai, Zhenxu ^{[1
,2
]}

机构：

[1] Hebei Univ Technol, Ctr Adv Laser Technol, Tianjin 300401, Peoples R China

[2] Hebei Key Lab Adv Laser Technol & Equipment, Tianjin 300401, Peoples R China

[3] Harbin Univ Sci & Technol, Wang Da Heng Ctr Quantum Control, Harbin 150080, Peoples R China

来源：

OPTICS COMMUNICATIONS | 2024年 / 563卷

关键词：

Vortex beams; Side; -pumped; Tunable; Spot defect mirrors; Orbital angular momentum; QUANTUM ENTANGLEMENT; OPTICAL VORTICES;

D O I：

10.1016/j.optcom.2024.130587

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

High -order vortex lasers are important for high angular momentum quantum entanglement and high -resolution spatial detection. However, traditional spatial phase modulation for Gaussian beams have difficulties achieving high -order and continuously adjustable optical vortex output. In this study, a high -order vortex laser output of continuously adjustable topological charges between 1 and 9 was obtained by adjusting the cavity length in a side -pumped Nd:YAG oscillator with circular spot defects of different sizes etched on the surface of the cavity mirror. Its chirality was also controlled by slightly tilting the cavity mirror, and the mode changes under different cavity parameters and the factors limiting the output optical -vortex order in the side -pumping structure were analyzed. In addition, the generation of optical vortex lattice modes with multiple spatially separated OAMs was obtained based on the spot defect method by displacing the cavity mirror.

引用

页数：6

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