Prospects of higher-order Laguerre-Gauss modes in future gravitational wave detectors

Journal Article · Mon Jun 15 04:00:00 EDT 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.79.122002· OSTI ID:21300918

Chelkowski, Simon; Hild, Stefan; Freise, Andreas ^[1]

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1. School of Physics and Astronomy, University of Birmingham, Edgbaston, Birmingham B15 2TT (United Kingdom)

The application of higher-order Laguerre-Gauss (LG) modes in large-scale gravitational wave detectors has recently been proposed. In comparison to the fundamental mode, some higher-order Laguerre-Gauss modes can significantly reduce the contribution of coating Brownian noise. Using frequency domain simulations we give a detailed analysis of the longitudinal and angular control signals derived with a LG{sub 33} mode in comparison to the fundamental transverse electromagnetic TEM{sub 00} mode. The performance regarding interferometric sensing and control of the LG{sub 33} mode is found to be similar, if not even better in all aspects of interest. In addition, we evaluate the sensitivity gain of the implementation of LG{sub 33} modes into the Advanced Virgo instrument. Our analysis shows that the application of the LG{sub 33} mode results in a broadband improvement of the Advanced Virgo sensitivity, increasing the potential detection rate of binary neutron star inspirals by a factor 2.1.

• OSTI ID: 21300918
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 79; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
COMPARATIVE EVALUATIONS
CONTROL
GAIN
GRAVITATIONAL WAVE DETECTORS
NEUTRON STARS
NOISE
PERFORMANCE
POTENTIALS
SENSITIVITY
SIMULATION