Berlin 2014 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 30: Poster: Photonics, laser development and applications, ultrashort laser pulses, quantum effects
Q 30.90: Poster
Tuesday, March 18, 2014, 16:30–18:30, Spree-Palais
Anisotropy compensation — •Andrea Cavanna1, Angela Perez1, Felix Just1, Maria Chekhova1,2,3, and Gerd Leuchs1,2,3 — 1Max Planck Institute for the Science of Light Günther-Scharowsky-Str. 1 Building 24 91058 Erlangen — 2University of Erlangen-Nürnberg, Staudtstrasse 7/B2, 91058 Erlangen, Germany — 3Department of Physics, M.V.Lomonosov Moscow State University, Leninskie Gory, 119991 Moscow, Russia
We demonstrate a method to compensate for the effect of the anisotropy in the spatial distribution of the radiation generated by parametric down-conversion (PDC) in bulk crystals. In order to achieve this task, a single nonlinear crystal is replaced by two consecutive crystals with opposite walk-off directions. We implement a simple numerical model to calculate the spatial distribution and correlations of PDC light in the low-gain regime, which takes the anisotropy of the crystals into account. Experimental results are presented which prove the validity of both the model and the method.