Coherent addition of high power laser diode array with a V-shape external Talbot cavity
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1Center for Engineering Science Advanced Research, Computer Sciences & Mathematics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA. liub@ornl.gov
Optics Express
|December 10, 2008
Abstract:
We designed a V-shape external Talbot cavity for a broad-area laser diode array and demonstrated coherent laser beam combining at high power with narrow spectral linewidth. The V-shape external Talbot cavity provides good mode-discrimination and does not require a spatial filter. A multi-lobe far-field profile generated by a low filling-factor phase-locked array is confirmed by our numerical simulation.
