28 W CW linearly polarized single mode all-fiber thulium-doped fiber laser operating at 1.95  μm

Jiachen Wang; Dong-il Yeom; Sang Bae Lee; Kwanil Lee

doi:10.1117/1.OE.56.4.046108

21 April 2017 28 W CW linearly polarized single mode all-fiber thulium-doped fiber laser operating at 1.95 μm

Jiachen Wang, Dong-il Yeom, Sang Bae Lee, Kwanil Lee

Author Affiliations +

Optical Engineering, Vol. 56, Issue 4, 046108 (April 2017). https://doi.org/10.1117/1.OE.56.4.046108

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 M2 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.

Citation Download Citation

Jiachen Wang, Dong-il Yeom, Sang Bae Lee, and Kwanil Lee "28 W CW linearly polarized single mode all-fiber thulium-doped fiber laser operating at 1.95 μm," Optical Engineering 56(4), 046108 (21 April 2017). https://doi.org/10.1117/1.OE.56.4.046108

Received: 23 January 2017; Accepted: 31 March 2017; Published: 21 April 2017

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