Stuttgart 2012 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 54: Poster 3

Q 54.28: Poster

Donnerstag, 15. März 2012, 16:30–19:00, Poster.I+II

Comprehensive study on Virtually Imaged Phased Arrays - experiment, theory and optical simulation — •Karsten Sperlich, Stephan Reiß, and Heinrich Stolz — Institut für Physik, Universität Rostock

Virtually Imaged Phased Arrays (VIPAs) are highly dispersive elements that can be used for spectroscopy. Their advantage in Brillouin spectroscopy is the very high dispersion, much higher than a grating's dispersion, and the low intensity loss compared to other multiple-beam interferometer, like Fabry-Pérot- or Lummer-Gehrcke interferometer. In this paper we shortly explain the basic principle of VIPAs and present Brillouin scattering measurements performed with a standard VIPA-setup together with the setup itself. Furthermore we show our ray tracing simulation using FRED and compare the achieved results, the experimental data as well as the theory, published by Xiao et al. [1], together in a Mathematica framework. Due to the framework it is very fast and easy to change all relevant parameters of the whole setup and get the results from theory instantly while the FRED simulation is closer to the experimental data, but takes several minutes computing time. [1] Xiao, S. Weiner, A.M. Lin, C., "A Dispersion Law for Virtually Imaged Phased-Array Spectral Dispersers Based on Paraxial Wave Theory", IEEE JOURNAL OF QUANTUM ELECTRONICS, VOL. 40, NO. 4, APRIL 2004