Title :
Absorption, Gain, and Laser Action in Bismuth-Doped Aluminosilicate Optical Fibers
Author :
Dvoyrin, Vladislav V. ; Kir´yanov, A.V. ; Mashinsky, Valery M. ; Medvedkov, Oleg I. ; Umnikov, Andrey A. ; Guryanov, Alexei N. ; Dianov, Evgeny M.
Author_Institution :
Fiber Opt. Res. Center, Russian Acad. of Sci., Moscow, Russia
Abstract :
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.
Keywords :
fibre lasers; light absorption; optical frequency conversion; bismuth-doped aluminosilicate optical fibers; bismuth-doped fiber lasers; excited-state absorption; infrared spectroscopy; laser action; optical fiber lasers; optical fiber materials; small-signal absorption; unsaturable absorption; up-conversion; wavelength 1179 nm; Absorption; Adaptive optics; Bismuth; Fiber lasers; Laser excitation; Light sources; Optical fibers; Optical pumping; Pump lasers; Wavelength measurement; Infrared spectroscopy; optical fiber lasers; optical fiber materials;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2009.2031822
