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Absorption, Gain, and Laser Action in Bismuth-Doped Aluminosilicate Optical Fibers

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7 Author(s)
Dvoyrin, V.V. ; Fiber Opt. Res. Center, Russian Acad. of Sci., Moscow, Russia ; Kir'yanov, A.V. ; Mashinsky, V.M. ; Medvedkov, O.I.
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In this study, bismuth-doped fiber lasers operating at the wavelength of 1179 nm with an optical efficiency of up to 28% are realized. The fiber gain upon 1-¿m pumping declines, while the unsaturable absorption increases with increasing the small-signal absorption. We conclude that up-conversion and excited-state absorption are responsible for limiting the efficiency of such lasers.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:46 ,  Issue: 2 )

Date of Publication:

Feb. 2010

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