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HL: Halbleiterphysik

HL 42: Symposium: Photonic Crystals

HL 42.3: Talk

Monday, March 7, 2005, 16:00–16:30, TU P270

Noise properties of supercontinua generated in photonic crystal fibers (PCFs) — •Harald R. Telle and Nils Haverkamp — Physikalisch-Technische Bundesanstalt, Braunschweig, Germany

The generation of femtosecond supercontinua in PCFs results from the complex interplay of various nonlinear effects like self-phase-modulation, four-wave-mixing, fission of Raman solitons, wave-braking and so on. A similar complexity is expected for the noise properties of such white-light-sources. Experimental investigations of several modulation transfer functions of a typical PCF will be presented from which noise- and phase-coherence-properties of the generated spectra can be inferred. Possible effects of such fluctuations on practical applications like optical frequency metrology or heterodyne-CARS will be discussed.