A New Class of Optical Beams for Large Baseline Interferometric Gravitational Wave Detectors

Abstract

A folded resonant Fabry-Perot cavity has the potential to significantly reduce the impact of coating thermal noise on the performance of kilometer scale gravitational wave detectors. When constructed using only spherical mirror surfaces it is possible to utilize the extremely robust $TE{M}_{00}$ mode optical mode. In this paper we investigate the potential thermal noise improvements that can be achieved for third generation gravitational wave detectors using realistic constraints. Comparing the previously proposed beam configurations such as e.g. higher order Laguerre-Gauss modes, we find that similar or better thermal noise improvement factors can be achieved, while avoiding degeneracy issues associated with those beams.

References in corpus (6)

• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• Titania-doped tantala/silica coatings for gravitational-wave detection
• Optimal Light Beams and Mirror Shapes for Future LIGO Interferometers
• The dependence of test-mass thermal noises on beam shape in gravitational-wave interferometers
• Thermal distortions of non-Gaussian beams in Fabry-Perot cavities
• A kg-mass prototype demonstrator for DUAL gravitational wave detector: opto-mechanical excitation and cooling

Cited by in corpus (5)

• Neutron Star Extreme Matter Observatory: A kilohertz-band gravitational-wave detector in the global network
• Exploring the sensitivity of gravitational wave detectors to neutron star physics
• Observation of photo-thermal feed-back in a stable dual-carrier optical spring
• Folding Gravitational-Wave Interferometers
• Multidimensional optical trapping of a mirror