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Efficient Yb^3+:CaGdAlO_4 bulk and femtosecond-laser-written waveguide lasers

Authors :
Bastian Deppe
Christoph Liebald
Kore Hasse
Thomas Calmano
Christian Kränkel
Source :
Optics Letters. 40:3552
Publication Year :
2015
Publisher :
The Optical Society, 2015.

Abstract

We report on, to the best of our knowledge, the first fs-laser-written waveguide laser in Yb3+:CaGdAlO4 (Yb:CALGO). With Yb:CALGO crystals grown in our labs, we obtained a slope efficiency of 69% and up to 2.4 W of continuous wave (cw) output power in a waveguide-laser configuration. Moreover, bulk laser experiments with Yb:CALGO were performed, and slope efficiencies up to 73%, optical-to-optical efficiencies of 65%, and maximum cw output powers of 3.3 W were reached. These are the highest efficiencies in the laser configuration with Yb:CALGO.

Details

ISSN :
15394794 and 01469592
Volume :
40
Database :
OpenAIRE
Journal :
Optics Letters
Accession number :
edsair.doi...........7c34aa808b2c3fd4392afdb5e3a3a5d2
Full Text :
https://doi.org/10.1364/ol.40.003552