High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm

Tongyu Dai; Shuangxing Guo; Xiaoming Duan; Renqin Dou; Qingli Zhang

doi:10.1364/OE.27.034204

High efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO₄ laser at 2068nm

Opt Express. 2019 Nov 11;27(23):34204-34210. doi: 10.1364/OE.27.034204.

Authors

Tongyu Dai, Shuangxing Guo, Xiaoming Duan, Renqin Dou, Qingli Zhang

PMID: 31878473
DOI: 10.1364/OE.27.034204

Abstract

Based on Faraday effect we demonstrate a thulium fiber pumped continuous-wave single-longitudinal-mode laser with a new Ho:GdTaO₄ crystal. By inserting a faraday rotator and a half-wave plate into the laser cavity, the single-longitudinal-mode output power of 392 mW at wavelength of 2068.33 nm was obtained in unidirectional Ho:GdTaO₄ ring laser, corresponding to a slope efficiency of 60.2% respect to the absorbed pump power. Furthermore, utilizing the Ho:GdTaO₄ power amplifier, the maximum single-longitudinal- mode output power of 1.02 W was achieved.