Open AccessMicrolensed microchip VECSEL
Author(s) -
N. Laurand,
Chee-Leong Lee,
Erdan Gu,
Jennifer E. Hastie,
S. Calvez,
Martin D. Dawson
Publication year - 2007
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.15.009341
Subject(s) - optics , microlens , materials science , laser , optoelectronics , semiconductor laser theory , aperture (computer memory) , lens (geology) , physics , acoustics
We report a 1.055-mum microchip VECSEL array which uses a microlens-patterned diamond both as a heatspreader and as an array of concave output mirrors. This configuration, which is suitable for laser array operation, is here exploited to perform a systematic study of a set of microchip lasers with the same semiconductor structure but different cavity properties. The transverse mode selection of individual VECSELs is found to depend on the mode-matching conditions and on the microlens aperture size. Mode-matched single-device emission in the fundamental mode (M2~1.1) with pump-limited output power of 70 mW is demonstrated.