Erlangen 2018 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 30: Optomechanics II
Q 30.1: Talk
Tuesday, March 6, 2018, 14:00–14:15, K 0.023
Laser Power Stabilization via Radiation Pressure — •Marina Trad Nery and Benno Willke — Albert Einstein Institute, Hannover, Germany
This work reports a new scheme for laser power stabilization in which power fluctuations of a laser beam are detected via radiation pressure produced on a micro oscillator. The ultimate goal of this experiment is to demonstrate an improved technique that can be implemented in the future generations of Interferometric Gravitational Wave Detectors. Since these interferometers are designed to detect differential length changes of around 10−18 m, they require high stability in the laser source: the Relative Power Noise needs to be on the order of 10−9 Hz−1/2 at frequencies around 10 Hz, the most stringent requirement in experimental physics. At such levels, vacuum fluctuations limit the sensitivity in detecting power fluctuations in the traditional scheme and new techniques are necessary to overcome this limitation and reach the desired sensitivity. The advantages of the new technique will be presented together with the details of a proof-of-principle experiment that is currently being set up at the Albert Einstein Institute, Hannover.