Abstract

This paper presents the results of developing a thulium fiber laser with output power 38 W and wavelength 1908 nm. The active fiber thus developed and fabricated has high thulium-ion concentration, which significantly increases the efficiency of the laser because of the cross-relaxation effect. The active fiber thus fabricated is determined to have an absorption peak at 788 nm. The results of developing the laser can be used to fabricate thulium lasers to be used in medicine, including lasers with power greater than 100 W. The laser design thus developed makes it possible to fabricate compact fiber lasers with power up to 50 W.

© 2017 Optical Society of America

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