We present experimental results on coherent beam combining from large arrays of high power broad-area semiconductor lasers. Our laser array consists of 47 high-power anti-reflection coated broad-area semiconductor lasers and each laser emitter is capable of emitting 1.8 W when uncoated with a maximum array output power of 80W. The total available power from the AR coated array is approximately 40W. By using an external V-shape cavity design, we experimentally demonstrated a coherently combined beam at the output power of ~13 W with the 0.07 nm FWHM spectrum linewidth that is limited by the sensitivity of the optical spectrum analyzer. We also discuss coherent beam combining of highpower broad area laser diode array in current driver pulse mode operation.

Date Published: 17 February 2010
PDF: 8 pages
Proc. SPIE 7583, High-Power Diode Laser Technology and Applications VIII, 75830Z (17 February 2010); doi: 10.1117/12.842259

Published in SPIE Proceedings Vol. 7583:
High-Power Diode Laser Technology and Applications VIII
Mark S. Zediker, Editor(s)