Tunable Ultraviolet Second Harmonics Generation Pumped by Supercontinuum Laser

Liang Chen; Meisong Liao; Xia Li; Penwen Kuan; Wanjun Bi; Tianxing Wang; Weiqing Gao; Lili Hu

doi:10.1109/JPHOT.2021.3128413

IEEE Photonics Journal (Jan 2022)

Tunable Ultraviolet Second Harmonics Generation Pumped by Supercontinuum Laser

Liang Chen,
Meisong Liao,
Xia Li,
Penwen Kuan,
Wanjun Bi,
Tianxing Wang,
Weiqing Gao,
Lili Hu

Affiliations

Liang Chen: ORCiD; Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Meisong Liao: Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Xia Li: ORCiD; Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Penwen Kuan: Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Wanjun Bi: ORCiD; Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Tianxing Wang: Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China
Weiqing Gao: School of Electronic Science and Applied Physics, Hefei University of Technology, Hefei, China
Lili Hu: ORCiD; Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China

DOI: https://doi.org/10.1109/JPHOT.2021.3128413
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 7

Abstract

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This paper presents the first systematic study on second harmonics generation based on a supercontinuum source. We analyzed the effect of the supercontinuum beam diameter and the crystal length to generate second harmonics. The walk-off effect on the second harmonics was also investigated; the efficiency was limited by the walk-off, and the beam of the second harmonic was out of shape. A tunable ultraviolet in the range of 285–340 nm is obtained with the pump of a visible supercontinuum, which is generated by a laser with an all-fiber device. The results provide a theoretical basis for the improvement of the second harmonic power and optimization of the crystal and beam diameters. A potentially tunable ultraviolet with a power exceeding 10 mW can be obtained by a high-power supercontinuum pump.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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