Journal article
16 W output power by high-efficient spectral beam combining of DBR-tapered diode lasers
Diode Lasers and LED Systems, Department of Photonics Engineering, Technical University of Denmark1
Department of Photonics Engineering, Technical University of Denmark2
Ferdinand-Braun-Institut3
Teraherts Technologies and Biophotonics, Department of Photonics Engineering, Technical University of Denmark4
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.
Language: | English |
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Year: | 2011 |
Pages: | 1228-1235 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.19.001228 |
ORCIDs: | Jensen, Ole Bjarlin , Andersen, Peter E. and Petersen, Paul Michael |