17 February 2010 Passive coherent locking of fiber lasers using volume Bragg gratings
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Abstract
We introduce a novel technique of coherently locking fiber lasers using volume Bragg gratings (VBGs) recorded in photo-thermo-refractive (PTR) glass as a passive multiplexer between channels. A two-channel coherently-locked Ybdoped fiber laser system with a narrow linewidth (~2.5 pm) and linear polarization (PER >20 dB) is demonstrated at a level of ~ 4 W (limited by pump). Scaling of this technique to coherently lock multiple (>2) fiber laser channels is discussed.
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Apurva Jain, Oleksiy Andrusyak, George Venus, Vadim Smirnov, Leonid Glebov, "Passive coherent locking of fiber lasers using volume Bragg gratings", Proc. SPIE 7580, Fiber Lasers VII: Technology, Systems, and Applications, 75801S (17 February 2010); doi: 10.1117/12.845947; https://doi.org/10.1117/12.845947
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