Review of the Laguerre-Gauss mode technology research program at Birmingham

• Main Authors: Fulda, Paul, Bond, Charlotte, Brown, Daniel, Brückner, Frank, Carbone, Ludovico, Chelkowski, Simon, Hild, Stefan, Kokeyama, Keiko, Wang, Mengyao, Freise, Andreas
• Format: Journal Article
• Language: English
• Published: 19-12-2011
• Subjects: Physics - Instrumentation and Methods for Astrophysics
• DOI: 10.48550/arxiv.1112.4388

Gravitational wave detectors from the advanced generation onwards are
expected to be limited in sensitivity by thermal noise of the optics, making
the reduction of this noise a key factor in the success of such detectors. A
proposed method for reducing the impact of this noise is to use higher-order
Laguerre-Gauss (LG) modes for the readout beam, as opposed to the currently
used fundamental mode. We present here a synopsis of the research program
undertaken by the University of Birmingham into the suitability of LG mode
technology for future gravitational wave detectors. This will cover our
previous and current work on this topic, from initial simulations and table-top
LG mode experiments up to implementation in a prototype scale suspended cavity
and high-power laser bench.