High-power operation of coherently coupled tapered laser diodes in an external cavityTools Schimmel, G., Doyen, I., Janicot, S., Hanna, M., Georges, P., Lucas-Leclin, G., Decker, J., Crump, P., Erbert, G., Kaunga-Nyirenda, S., Moss, D., Bull, S., Larkins, E.C., Witte, U. and Traub, M. (2016) High-power operation of coherently coupled tapered laser diodes in an external cavity. In: High-Power Diode Laser Technology and Applications XIV, 15-16 February 2016, San Francisco, California, United States. Full text not available from this repository.
Official URL: http://dx.doi.org/10.1117/12.2211613
AbstractWe demonstrate a rear-side phase-locking architecture with two high-brightness diode lasers. This technique is based on the passive phase-locking of emitters in an external cavity on their rear facet, and their coherent combination on the front facet. Two high-brightness high-power tapered laser diodes are coherently combined using a Michelson-based cavity. The combining efficiency is above 80% and results in an output power of 6.7 W in a nearly diffraction-limited beam. The rear-side architecture is then used with a laser bar of 5 tapered emitters using an interferometric extended cavity, based on a diffractive optical element. We describe the experimental evaluation of the diffractive optical element, and the phase-locked operation of the laser bar.
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