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Proceedings Paper

Fundamental array mode operation of semiconductor laser arrays using external spatial filtering
Author(s): Chung-Pin Cherng; Marek Osinski
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Paper Abstract

Detailed broad-area coupled-mode analysis of in-phase mode selection in carrier-guided arrays coupled to external cavities with spatial filters is presented and compared with experimental results. A high-power (68 mW with output facet reflectivity of 90% which corresponds to estimated 266 mW with output facet reflectivity of 30%), on-axis, single-lobe far field with nearly diffraction-limited (0.64 degree(s)) full width at half maximum is achieved from a ten- stripe carrier-guided anti-reflection-coated laser array by coupling to an external cavity with a spatial filter. The in-phase operation is verified by wavefront measurements using shearing interferometry.

Paper Details

Date Published: 1 July 1991
PDF: 14 pages
Proc. SPIE 1418, Laser Diode Technology and Applications III, (1 July 1991); doi: 10.1117/12.43824
Show Author Affiliations
Chung-Pin Cherng, Univ. of New Mexico (United States)
Marek Osinski, Univ. of New Mexico (United States)

Published in SPIE Proceedings Vol. 1418:
Laser Diode Technology and Applications III
Daniel S. Renner, Editor(s)

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