Schimmel, G. and Doyen, I. and Janicot, S. and Hanna, M. and Georges, P. and Lucas-Leclin, G. and Decker, J. and Crump, P. and Erbert, G. and Kaunga-Nyirenda, S. and Moss, D. and Bull, S. and Larkins, E.C. and Witte, U. and Traub, M.
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.
We 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.
Conference or Workshop Item
||Schimmel, G. [et al.], “High-power operation of coherently coupled tapered laser diodes in an external cavity", Proc. SPIE, High-power diode laser technology and Applications XIV, Editor, Mark S. Zediker, v. 9733, Article Number 97330I, (2016). doi:10.1117/12.2211613.
Copyright 2016 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
||coherent beam combining, passive phase-locking, self-organized extended cavity, diode lasers
||University of Nottingham, UK > Faculty of Engineering > Department of Electrical and Electronic Engineering
||28 Jul 2016 07:33
||14 Sep 2016 10:16
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