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Q: Fachverband Quantenoptik und Photonik

Q 6: Quantum Effects: Light Scattering and Propagation

Q 6.5: Vortrag

Montag, 14. März 2011, 11:45–12:00, SCH A01

Photon-Phonon Interaction in Hollow-Core Photonic Crystal Fibers — •Wenjia Zhong, Bettina Heim, Dominique Elser, Christoph Marquardt, and Gerd Leuchs — MPI für die Physik des Lichts, Erlangen, Germany

In hollow-core photonic crystal fibers (HCPCF) light travels in the central air core surrounded by a photonic-bandgap structure.

We performed quantum-noise-limited measurements in a HCPCF and observed polarization noise at sideband frequencies in the MHz range when using a pulsed laser. The observation shows that although the light has small overlap with the silica material, there exists excess polarization noise.

The agreement of the experimental findings with finite element method simulations of the acoustic vibrational modes of the HCPCF shows that the polarization noise is induced by thermally excited acoustic vibrations of the photonic crystal structure of the HCPCF.