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Proceedings Paper

Beam combination of multiple vertical external cavity surface emitting lasers via volume Bragg gratings
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Paper Abstract

We present an experimental study on beam combining techniques with multiple vertical external cavity surface emitting lasers (VECSELs) using volume Bragg gratings (VBGs). The specially designed holographic gratings introduce frequency specific feedback for the near infrared wavelength VECSELs to achieve both spectral linewidth narrowing and beam combination effects. For coherent addition, we obtained >3W output power with 8% slope efficiency in a coherent power scaling cavity scheme. In the multiplexed VBGs (MVBGs) wavelength beam combining compound cavity scheme, we measured >6W combined output with nearly 100% combining efficiency. Both beam combining/power scaling schemes produced spectrally narrowed and near diffraction limited outputs.

Paper Details

Date Published: 3 March 2014
PDF: 6 pages
Proc. SPIE 8966, Vertical External Cavity Surface Emitting Lasers (VECSELs) IV, 89660Y (3 March 2014); doi: 10.1117/12.2039666
Show Author Affiliations
Chunte A. Lu, Air Force Research Lab. (United States)
William P. Roach, Air Force Research Lab. (United States)
Genesh Balakrishnan, The Univ. of New Mexico (United States)
Alexander R. Albrecht, The Univ. of New Mexico (United States)
Jerome V. Moloney, College of Optical Sciences, The Univ. of Arizona (United States)
Leonid B. Glebov, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)


Published in SPIE Proceedings Vol. 8966:
Vertical External Cavity Surface Emitting Lasers (VECSELs) IV
Jerome V. Moloney, Editor(s)

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