Control and automatic alignment of the output mode cleaner of GEO 600

authored by

M. Prijatelj, H. Grote, J. Degallaix, M. Hewitson, S. Hild, C. Affeldt, A. Freise, J. Leong, H. Lück, K. A. Strain, H. Wittel, B. Willke, K. Danzmann

Abstract

The implementation of a mode cleaner at the output port of the GEO600 gravitational wave detector will be part of the upcoming transition from GEO600 to GEOHF. Part of the transition will be the move from a heterodyne readout to a DC readout scheme. DC readout performance will be limited by higher order optical modes and control sidebands present at the output port. For optimum performance of DC readout an output mode cleaner (OMC) will clean the output beam of these contributions. Inclusion of an OMC will introduce new noise sources whose magnitudes needed to be estimated and for which new control systems will be needed. In this article we set requirements on the performance of these control systems and investigate the simulated performance of different designs.

Organisation(s)

Institute of Gravitation Physics

Type

Conference contribution

Volume

228

Publication date

2010

Publication status

Published

Peer reviewed

Yes

Electronic version(s)

https://doi.org/10.1088/1742-6596/228/1/012014 (Access: Unknown)