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Proceedings Paper

Slab-coupled optical waveguide lasers and amplifiers
Author(s): Gary M. Smith; Joseph P. Donnelly; Leo J. Missaggia; Michael K. Connors; Shawn M. Redmond; Kevin J. Creedon; David C. Mathewson; Reuel B. Swint; Antonio Sanchez-Rubio; George W. Turner
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Paper Abstract

Slab-coupled optical waveguide lasers (SCOWLs) and amplifiers (SCOWAs) are inherently low-confinement structures with large nearly-circular modes that are easily coupled to optical fibers or collimated for free-space applications. Recently SCOWL powers have increased to 3 W by increasing the cavity length to 1 cm and improving the heat removal. SCOWAs are coherently combined using active phase control to achieve a very high-brightness source. Our coherent beam combining system consists of single-pass amplifiers with angled-facet SCOWAs that suppress feedback. Single-pass, 5-mm long, SCOWAs have now been demonstrated with 1.5 W CW output with only 50 mW seed power. Arrays of 47 SCOWAs have demonstrated a raw power of 57 W with 50 mW of seed power per element. A coherent beam combining demonstration is currently being assembled.

Paper Details

Date Published: 8 February 2012
PDF: 7 pages
Proc. SPIE 8241, High-Power Diode Laser Technology and Applications X, 82410S (8 February 2012); doi: 10.1117/12.905028
Show Author Affiliations
Gary M. Smith, MIT Lincoln Lab. (United States)
Joseph P. Donnelly, MIT Lincoln Lab. (United States)
Leo J. Missaggia, MIT Lincoln Lab. (United States)
Michael K. Connors, MIT Lincoln Lab. (United States)
Shawn M. Redmond, MIT Lincoln Lab. (United States)
Kevin J. Creedon, MIT Lincoln Lab. (United States)
David C. Mathewson, MIT Lincoln Lab. (United States)
Reuel B. Swint, MIT Lincoln Lab. (United States)
Antonio Sanchez-Rubio, MIT Lincoln Lab. (United States)
George W. Turner, MIT Lincoln Lab. (United States)

Published in SPIE Proceedings Vol. 8241:
High-Power Diode Laser Technology and Applications X
Mark S. Zediker, Editor(s)

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