Second-order coherence of supercontinuum light.
We analyze the coherence properties of supercontinuum generated in photonic crystal fibers by applying the second-order coherence theory of nonstationary light. Using an ensemble of simulated realizations, we construct two-frequency cross-spectral density and two-time mutual coherence functions. This allows us to introduce measures of temporal and spectral coherence. We show that, in the long-pulse regime, supercontinuum light can be decomposed into a sum of coherent and quasi-stationary contributions. Our approach and findings are also applicable in the short-pulse regime.
Genty
Goëry
G
Tampere University of Technology, Optics Laboratory, P.O. Box 692, FI-33101 Tampere, Finland. goery.genty@tut.fi
Surakka
Minna
M
Turunen
Jari
J
Friberg
Ari T
AT