Phase stabilization of a large-mode-area ytterbium-doped fiber amplifier.
Measurements are reported on the open and closed-loop phase stability of a large-mode-area ytterbium-doped fiber amplifier. Phase fluctuations are characterized by a high-frequency low-amplitude jitter superimposed on a slow power-dependent drift. The amplifier may be phase locked to a precision of lambda/20 by using a low-bandwidth feedback loop.
Jones
D C
DC
QinetiQ, St. Andrews Road, Malvern, Worcestershire, UK. dcjones@qinetiq.com
Stacey
C D
CD
Scott
A M
AM