Open AccessEfficient laser emission in Ho^3+:LiLuF_4 grown by micro-Pulling Down method
Author(s) -
S. Veronesi,
Yongzhuan Zhang,
M. Tonelli,
Martin Stevens
Publication year - 2012
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.018723
Subject(s) - laser , materials science , optics , lasing threshold , wavelength , slope efficiency , optoelectronics , fiber laser , physics
We report a spectroscopic investigation and an efficient Ho:LiLuF4 laser in-band pumped at 1938 nm. This represents the first laser emission of a fluoride crystal grown by micro-Pulling Down method in the 2 μm wavelength range. The Ho:LiLuF4 laser yielded a maximum output power of 7.1W with a slope efficiency of 41% and a threshold around 5W, at lasing wavelength of 2054.2 nm.