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Q: Fachverband Quantenoptik und Photonik

Q 42: Precision Measurements and Metrology V

Q 42.3: Vortrag

Donnerstag, 11. März 2010, 11:00–11:15, A 310

Laser noise reduction by means of the optical Kerr Effect — •André Thüring, Alexander Khalaidovski, Nico Lastzka, Daniel Wahlmann, Benno Willke, Karsten Danzmann, and Roman Schnabel — Institut für Gravitationsphysik, Leibniz Universität Hannover und Max-Planck-Institut für Gravitationsphysik (Albert-Einstein-Institut), Callinstrasse 38, D-30167 Hannover

Conventional laser power stabilization techniques rely on the photo-electric detection of high light powers and on the filtering by means of linear optical resonators. These techniques are limited on the one hand by the intrinsic noise of the photo-detection, and on the other hand by the linewidth of the filter resonators being used. Here we present an alternative method for the noise reduction of high power lasers. It is based on the optical Kerr effect and can be used either for a pure optical passive noise reduction or as sensing device that does not require the photo-detection of high light powers. We report on the results of a first proof-of-principle experiment where a noise reduction of about 32 dB was achieved.