Open AccessHigh efficiency single-longitudinal-mode resonantly-pumped Ho:GdTaO4 laser at 2068nm
Author(s) -
Dai Taguchi,
Shuangxing Guo,
Xiaoming Duan,
Renqin Dou,
Qingli Zhang
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.034204
Subject(s) - longitudinal mode , optics , slope efficiency , laser , materials science , fiber laser , continuous wave , single mode optical fiber , faraday rotator , wavelength , faraday effect , amplifier , thulium , laser power scaling , optoelectronics , physics , magnetic field , cmos , quantum mechanics
Based on Faraday effect we demonstrate a thulium fiber pumped continuous-wave single-longitudinal-mode laser with a new Ho:GdTaO 4 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:GdTaO 4 ring laser, corresponding to a slope efficiency of 60.2% respect to the absorbed pump power. Furthermore, utilizing the Ho:GdTaO 4 power amplifier, the maximum single-longitudinal- mode output power of 1.02 W was achieved.