High-power operation of coherently coupled tapered laser diodes in an external cavity
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.; Traub, M.
S. Bull firstname.lastname@example.org
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.
|Journal Article Type||Conference Paper|
|Publication Date||May 23, 2016|
|Journal||Proceedings of SPIE|
|Publisher||Society of Photo-optical Instrumentation Engineers|
|Peer Reviewed||Peer Reviewed|
|Book Title||High-Power Diode Laser Technology and Applications XIV|
|APA6 Citation||Schimmel, G., Doyen, I., Janicot, S., Hanna, M., Georges, P., Lucas-Leclin, G., …Traub, M. (2016). High-power operation of coherently coupled tapered laser diodes in an external cavity. Proceedings of SPIE, 9733, https://doi.org/10.1117/12.2211613|
|Keywords||coherent beam combining, passive phase-locking, self-organized extended cavity, diode lasers|
|Copyright Statement||Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf|
|Additional Information||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.
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf
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