Experimental demonstration of mode structure in ultralong Raman fiber lasers.
We present the first experimental demonstration of a resolvable mode structure with spacing c/2nL in the RF spectra of ultralong Raman fiber lasers. The longest ever demonstrated laser cavity (L=84 km), RF peaks of ~100 Hz width and spacing ~1 kHz have been observed at low intracavity powers. The width of the peaks increases linearly with growing intracavity power and is almost independent of fiber length.
Babin
S A
SA
Institute of Automation and Electrometry, Novosibirsk, Russia.
Karalekas
V
V
Harper
P
P
Podivilov
E V
EV
Mezentsev
V K
VK
Ania-Castañón
J D
JD
Turitsyn
S K
SK