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21 April 2017 28 W CW linearly polarized single mode all-fiber thulium-doped fiber laser operating at 1.95    μ m
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Abstract
An all-fiber type, CW, linearly polarized thulium-doped fiber laser is reported. Highly linear polarization was achieved by a special management of fiber Bragg gratings, which performs as the laser cavity reflectors. The laser generated 28 W signal output at 1949 nm with a slope efficiency of 47.3%. The polarization extinction ratio of the laser was measured to be around 20 dB. The beam quality of the laser was near diffraction-limited, with M 2 of 1.1. The laser’s output features make it to be a potential light source for some important applications such as for pumping holmium-doped solid state lasers.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Jiachen Wang, Jiachen Wang, Dong-il Yeom, Dong-il Yeom, Sang Bae Lee, Sang Bae Lee, Kwanil Lee, Kwanil Lee, } "28 W CW linearly polarized single mode all-fiber thulium-doped fiber laser operating at 1.95    μ m ," Optical Engineering 56(4), 046108 (21 April 2017). https://doi.org/10.1117/1.OE.56.4.046108 . Submission: Received: 23 January 2017; Accepted: 31 March 2017
Received: 23 January 2017; Accepted: 31 March 2017; Published: 21 April 2017
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