Wavelength-tunable diamond Raman laser at ∼2.5 μm. (18th June 2021)

• Record Type: Journal Article
• Authors: Shao, Zhenhua; Li, Xuanxi; Shen, Yajie; Shen, Deyuan; Zhu, Heyuan
• Is Part Of: Laser physics letters. Volume 18:Number 7(2021)
• Publication Date: 2021-06-18
• Subjects: stimulated Raman laser -- diamond -- tunable Raman laser; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/ac091a
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: We report on wavelength tunable operation of a diamond Raman laser at ∼2.5 μ m pumped by a narrow linewidth Q-switched Tm:YAP laser at 1.88 μ m. The Raman laser operates at 50 Hz of repetition rate and produced stable pulses of 1.12 mJ energy and 9.2 ns duration, corresponding to a peak power of ∼121.7 kW. Over 56 mW of average output power has been generated for ∼197 mW of incident pump power, corresponding to a slope efficiency of 45.3%. Output wavelength was tunable from 2511.1 nm to 2522.1 nm via a birefringence filter and two etalons incorporated in the Tm:YAP laser resonator.