An in-band pumped thulium-doped distributed-feedback fiber laser is reported. The laser produced 318 mW of output power at 1935 nm with a slope efficiency of 21% with respect to absorbed pump power.
© 2007 Optical Society of America
D. Shen, Z. Zhang, A. J. Boyland, J. K. Sahu, W. A. Clarkson, and M. Ibsen, " Thulium-Doped Distributed-Feedback Fiber Laser with > 0.3 W Output at 1935 nm," in Bragg Gratings, Photosensitivity, and Poling in Glass Waveguides, OSA Technical Digest (CD) (Optical Society of America, 2007), paper BTuC1.
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