Open Access16 W output power by high-efficient spectral beam combining of DBR-tapered diode lasers
Author(s) -
André Müller,
Deepak Vijayakumar,
Ole Bjarlin Jensen,
KarlHeinz Hasler,
Bernd Sumpf,
G. Erbert,
Peter E. Andersen,
Paul Michael Petersen
Publication year - 2011
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.19.001228
Subject(s) - optics , laser , laser beam quality , materials science , beam (structure) , diode , coherence (philosophical gambling strategy) , semiconductor laser theory , optoelectronics , m squared , physics , laser beams , quantum mechanics
Up to 16 W output power has been obtained using spectral beam combining of two 1063 nm DBR-tapered diode lasers. Using a reflecting volume Bragg grating, a combining efficiency as high as 93.7% is achieved, resulting in a single beam with high spatial coherence. The result represents the highest output power achieved by spectral beam combining of two single element tapered diode lasers. Since spectral beam combining does not affect beam propagation parameters, M2-values of 1.8 (fast axis) and 3.3 (slow axis) match the M2-values of the laser with lowest spatial coherence. The principle of spectral beam combining used in our experiments can be expanded to combine more than two tapered diode lasers and hence it is expected that the output power may be increased even further in the future.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom