J. Arkwright et al., RESONANTLY ENHANCED NONLINEARITY USING STIMULATED DOWN-PUMPING IN NEODYMIUM-DOPED TWIN-CORE FIBER, Electronics Letters, 30(3), 1994, pp. 235-236
Preliminary observations and measurements of increased relaxation spee
ds in resonantly enhanced nonlinear systems are demonstrated. The effe
ct is observed using a neodymium-doped twin-core fibre interferometer,
and uses stimulated down-pumping of the F-4(3/2) metastable state in
neodymium. The relaxation time has been reduced from approximately 390
mus to less than 120 mus, and it is shown that the reduction is depen
dent on the power of the down-pumping source.