Work

Single- and dual-tube He–Ne lasers for high-power excitation of LG01-mode vortex beam

Year: 2024

Type: article

Abstract: In this study, aiming to extend the power of LG01-mode vortex light at 632.8 nm, the commercial He–Ne laser was upgraded to dual-tube gain geometry with the assistance of an intracavity spot defect for spatial filtering. We investigated the impact of using single and double He–Ne gas gain tubes on the powers of vortex laser output, and achieved a maximum 4.7 mW power of LG01-mode vortex light, corresponding to an optical–optical conversion efficiency of 39.2% and making it the highest power of vortex light obtained in He–Ne laser up to now.

Source: Applied Physics Express

DOI: 10.35848/1882-0786/ad8410

Authors: Xinqiao Lu, Weilin Cao, Jiaxin Song, Qisong Li, Dawei Zhang, Jianlang Li

Institutions: University of Shanghai for Science and Technology, Xidian University

Language: English

Topic: Orbital Angular Momentum in Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,250

Funders: National Natural Science Foundation of China, Science and Technology Commission of Shanghai Municipality