22 February 2017 Extreme temperature operation of thulium-doped silica fiber lasers
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Abstract
We measure changes in the 2um absorption and emission spectra of thulium-doped silica fiber lasers operating from 80 K – 373 K. Reduction of the long wavelength tail of the 3H6-3H4 absorption feature under cryogenic cooling allows for efficient lasing in the 1800nm region. Greater than 17 W of output power was generated at 1850 nm by 793 nm diode-pumping a free-running single-mode thulium oscillator under cryogenic cooling conditions.
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Benjamin R. Johnson, Benjamin R. Johnson, Daniel J. Creeden, Daniel J. Creeden, Scott D. Setzler, Scott D. Setzler, } "Extreme temperature operation of thulium-doped silica fiber lasers", Proc. SPIE 10083, Fiber Lasers XIV: Technology and Systems, 100830J (22 February 2017); doi: 10.1117/12.2252011; https://doi.org/10.1117/12.2252011
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