title: Output spectrum of Yb-doped fiber lasers.
abstract: An analytical model for self phase modulation in Yb-doped fiber laser (YDFL) describing output spectrum and its broadening with increasing power has been developed. Spectral measurements in continuous wave (CW) cladding-pumped YDFL have proved the validity of the model demonstrating hyperbolic secant shape of the spectrum and linear increase of the line width with power in 1-12 W range. At lower powers, spatial hole burning and line self-sweeping effects become important and define the lower limit for the line width.
authors: Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences (SB RAS), Koptyug ave. 1, Novosibirsk 630090, Russia. kab@iae.nsk.su
authors: S I
authors: SI
authors: Kablukov
authors: E A
authors: EA
authors: Zlobina
authors: E V
authors: EV
authors: Podivilov
authors: S A
authors: SA
authors: Babin