Ho:KY(WO4)2thin-disk laser passively Qswitched by a GaSb-based SESAM

Identificador:  imarina:3823884

Handle: https://hdl.handle.net/20.500.11797/imarina3823884

Autors:  Mateos, Xavier; Loiko, Pavel; Lamrini, Samir; Scholle, Karsten; Fuhrberg, Peter; Suomalainen, Soile; Harkonen, Antti; Guina, Mircea; Vatnik, Sergei; Vedin, Ivan; Aguilo, Magdalena; Diaz, Francesc; Wang, Yicheng; Griebner, Uwe; Petrov, Valentin

Resum:
© 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. A Holmium thin-disk laser based on a 3 at.% Ho:KY(WO 4 ) 2 /KY(WO4)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 ?J /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%.