Open AccessHo:KY(WO4)2 thin-disk laser passively Q-switched by a GaSb-based SESAM
Author(s) -
Xavier Mateos,
Pavel Loiko,
Samir Lamrini,
Karsten Scholle,
P. Fuhrberg,
Soile Suomalainen,
Antti Härkönen,
Mircea Guina,
S. M. Vatnik,
I A Vedin,
Magdalena Aguiló,
Francesc Díaz,
Yicheng Wang,
Uwe Griebner,
Valentín Petrov
Publication year - 2018
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.26.009011
Subject(s) - materials science , optics , laser , fiber laser , thin disk , slope efficiency , optoelectronics , energy conversion efficiency , quantum well , holmium , disk laser , thin film , q switching , pulse duration , power (physics) , semiconductor laser theory , semiconductor , physics , nanotechnology , stars , quantum mechanics , astronomy
A Holmium thin-disk laser based on a 3 at.% Ho:KY(WO 4 ) 2 / KY(WO 4 ) 2 epitaxy and single-bounce pumping by a 1960 nm Tm-fiber laser is passively Q-switched with a GaSb-based quantum-well semiconductor saturable absorber mirror. It generates an average output power of 551 mW at 2056 nm with a slope efficiency of 44% (with respect to the absorbed pump power). The best pulse characteristics (energy and duration) are 4.1 μJ / 201 ns at a repetition rate of 135 kHz and the conversion efficiency with respect to the continuous-wave regime is as high as 93%.