A 100 W-level ultra-narrow fiber-coupled 780 nm diode laser

Longfei Jiang; Rui Wang; Huizi Zhao; Jianyong Sun; Qingshan Liu; Zining Yang; Hongyan Wang; Weiqiang Yang; Weihong Hua; Xiaojun Xu

doi:10.1017/hpl.2024.47

High Power Laser Science and Engineering (Jan 2024)

A 100 W-level ultra-narrow fiber-coupled 780 nm diode laser

Longfei Jiang,
Rui Wang,
Huizi Zhao,
Jianyong Sun,
Qingshan Liu,
Zining Yang,
Hongyan Wang,
Weiqiang Yang,
Weihong Hua,
Xiaojun Xu

Affiliations

Longfei Jiang: ORCiD; College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Rui Wang: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Huizi Zhao: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Jianyong Sun: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Qingshan Liu: ORCiD; College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Zining Yang: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Hongyan Wang: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Weiqiang Yang: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Weihong Hua: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China
Xiaojun Xu: College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha, China Nanhu Laser Laboratory, National University of Defense Technology, Changsha, China Hunan Provincial Key Laboratory of High Energy Laser Technology, National University of Defense Technology, Changsha, China

DOI: https://doi.org/10.1017/hpl.2024.47
Journal volume & issue: Vol. 12

Abstract

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We report a high-power ultra-narrow fiber-coupled diode laser using a Faraday anomalous dispersion optical filter (FADOF) as an external cavity element. An external cavity suitable for both the fiber-coupled package and FADOF configuration has been proposed. Using a 87Rb-based FADOF as the frequency-selective element, we realized a 103 W continuous laser output with a uniform circular beam. The center wavelength was precisely locked at the D2 line of the Rb resonance, and the bandwidth was narrowed from 1.8 nm (free-running, full width at half maximum (FWHM)) to 0.013 nm (6.9 GHz, FWHM). The side mode suppression ratio reached 31 dB. Such diode lasers with precise wavelength and high spectral brightness have critical applications in many fields, such as high-energy gas laser pumping, spin-exchange optical pumping, Raman spectroscopy and nonlinear optics.

Published in High Power Laser Science and Engineering

ISSN: 2095-4719 (Print); 2052-3289 (Online)
Publisher: Cambridge University Press
Country of publisher: United Kingdom
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics
Website: https://www.cambridge.org/core/journals/high-power-laser-science-and-engineering

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