We propose and demonstrated all-fiber in-phase mode selection in an Yb-doped multi-core photonic crystal fiber laser. A high slope efficiency of 71% and significantly improved beam profile by fill-factor enlargement were achieved.
© 2011 OSA
M. Matsumoto, T. Kobayashi, A. Shirakawa, and K. Ueda, "All-Fiber Phase-locked Multi-core Photonic Crystal Fiber Laser," in Advances in Optical Materials, OSA Technical Digest (CD) (Optical Society of America, 2011), paper AMC3.
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