Hannover 2010 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 29: Precision Measurements and Metrology III

Q 29.8: Talk

Wednesday, March 10, 2010, 15:45–16:00, A 310

Simultaneous stabilization and correlated noise in a single-mode pumped non-planar ring oscillator — •Robin H. Bähre, Tobias Meier, Benno Willke, and Karsten Danzmann — Albert-Einstein-Institute, Max-Planck-Institute for Gravitational Physics, and Institut für Gravitationsphysik, Leibniz Universität Hannover, Callinstr. 38, D-30167 Hannover

Simultaneous stabilization is an approach to non-planar ring oscillator (NPRO) laser stabilization that achieves significant suppression of laser power noise by elimination of correlated frequency noise.

A key component to the success of this experiment is a stable pump source of the NPRO. We have set up a Ti:sapphire solid-state laser as a pump source at 808 nm to provide the required pump beam quality, frequency stability and output power to achieve the quantum noise limit of the NPRO laser power.

We report simultaneous stabilization of the laser power of such a Ti:sapphire single-mode pumped Nd:YAG NPRO with a continuous-wave output power of 75 mW at 1064 nm. We present the results of a table-top experiment in air and an improved setup on a platform that is suspended as a pendulum in a seismically and acoustically isolating tank.