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.
© 2010 Optical Society of America
Coherence and Statistical Optics
Original Manuscript: June 3, 2010
Revised Manuscript: August 3, 2010
Manuscript Accepted: August 4, 2010
Published: September 7, 2010
Goëry Genty, Minna Surakka, Jari Turunen, and Ari T. Friberg, "Second-order coherence of supercontinuum light," Opt. Lett. 35, 3057-3059 (2010)