532 nm pumped visible emission from Ho3+-doped fiber lasers. (February 2023)

• Record Type: Journal Article
• Authors: Ji, Shuaihao; Wang, Zhongyu; Huang, Shuhua; Shen, Chenyao; Lin, Jiazhen; Xiao, Bo; Feng, Qichen; Xu, Huiying; Cai, Zhiping
• Is Part Of: Optics & laser technology. Volume 158:Part A(2023)
• Publication Date: 2023-02
• Subjects: In-band pump -- Visible lasers -- Downconversion -- Ho3+-doped fiber; Optics -- Periodicals; Lasers -- Periodicals; Electronic journals; 621.366
• DOI: 10.1016/j.optlastec.2022.108900
• Languages: English
• ISSNs: 0030-3992

Abstract

Highlights: 532 nm pumped green emission is reported for the first time. Maximum downconversion green output power of 520 mW is achieved. Visible dual-wavelength fiber laser is realized for the first time in Ho-doped ZBLAN fiber. Theoretical model for optimizing the output characteristics of visible lasers is proposed. Abstract: We report a green fiber laser based on an in-band pumping process for the first time. The impact of the pumping mechanism on output characteristics is addressed, and a new pumping strategy to improve the output performance of visible fiber lasers is presented. We demonstrate the highest power of 0.52 W green fiber laser output using a single-wavelength 532 nm solid-state laser as the pump source, and we also exhibit dual-wavelength excitation with a maximum power output of 0.72 W. Simultaneously, we investigate the reasons of visible dual-wavelength generation and modulation approaches in Ho 3+ -doped fluoride fibers. This method efficiently tackles the problem of visible light generation in Ho 3+ -doped fibers being limited, as well as pave the way for more efficient and powerful visible fiber lasers.