Open AccessPolarized laser oscillation of isotropic disordered Yb:Ca_3(NbGa)_2-xGa_3O_12 crystal
Author(s) -
Junhai Liu,
Huaijin Zhang,
Wenjuan Han,
Valentín Petrov,
Jing Wang
Publication year - 2008
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.16.012201
Subject(s) - slope efficiency , birefringence , optics , materials science , laser , isotropy , polarization (electrochemistry) , oscillation (cell signaling) , linear polarization , pulse duration , continuous wave , physics , fiber laser , chemistry , biology , genetics
Linearly polarized laser oscillation is observed with the isotropic disordered Yb:Ca3(NbGa)(2-x)Ga3O12 crystal, resulting from stress-induced birefringence. At high pump levels, two orthogonal polarization states exist simultaneously. A continuous-wave output power of 2.0 W is obtained with an optical-to-optical efficiency of 32%, the slope efficiency amounts to 40%. In the passively Q-switched regime, the average output power reaches 1.35 W at a pulse repetition frequency of 16.7 kHz, with a slope efficiency of 37%; the laser pulse energy, duration, and peak power amount to 81 microJ, 25 ns, and 3.24 kW, respectively.