Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 54: Poster 3
Q 54.73: Poster
Thursday, March 15, 2012, 16:30–19:00, Poster.I+II
Spatial correlations of biphotons generated by parametric down conversion pumped with different transversal laser modes — •Dirk Puhlmann1, Dietmar Korn2, Axel Heuer1, and Ralf Menzel1 — 1Universität Potsdam, Photonik, Karl-Liebknecht-Strasse 24/25, 14476 Potsdam-Golm — 2Institut für Photonik und Quantenelektronik Karlsruher Institut für Technologie (KIT), Engesserstr. 5, D-76131 Karlsruhe
Biphotons can be used for a variety of applications in metrology, imaging or in quantum mechanics. In this Poster we present investigations of the transversal correlations of biphotons generated from type II parametric down conversion (PDC). To enhance the spatial correlations the diameter of the pump beam can be increased and small apertures in the experimental setup should be avoided [1]. To investigate the spatial correlations, two different types of laser sources, a pico second laser and a cw laser, and different transversal laser modes were applied to pump the PDC process. Higher TEM modes were generated by a spatial light modulator. The results of the measurements are reported.
[1] Ostermeyer M., Puhlmann D., Korn D., J. Opt. Soc. Am. B 26, 2347-2356 (2010)