Abstract
We demonstrate a method for single-detector coherent sensing and automated coalignment of group delays in a coherently combined laser array, enabling robust coherent combining of broadband sources despite initial path mismatches exceeding the laser coherence length. The method is based on Fourier-domain filtering of the coherently combined laser beam to extract error signals, and it is equally applicable to controlling both spatial and temporal misalignments.
©2012 Optical Society of America
Full Article | PDF ArticleMore Like This
Gregory D. Goodno, Stuart J. McNaught, Mark E. Weber, and S. Benjamin Weiss
Opt. Lett. 37(20) 4272-4274 (2012)
Gregory D. Goodno and S. Benjamin Weiss
Opt. Express 20(14) 14945-14953 (2012)
Naresh Satyan, Arseny Vasilyev, George Rakuljic, Jeffrey O. White, and Amnon Yariv
Opt. Express 20(23) 25213-25227 (2012)