K. R. Hansen and J. Lægsgaard, "Thermal Effects in High-Power Fiber Amplifiers,"
in CLEO:2011 - Laser Applications to Photonic Applications,
OSA Technical Digest (CD)
(Optical Society of America, 2011), paper JWA32.
The effect of temperature gradients in Yb-doped fiber amplifiers is studied numerically. We investigate the dependence of the mode area on the signal power, and compare forward and backward pumping schemes.