Calculation of thermal noise in grating reflectors
arXiv:1308.6677 · doi:10.1103/PhysRevD.88.042001
Abstract
Grating reflectors have been repeatedly discussed to improve the noise performance of metrological applications due to the reduction or absence of any coating material. So far, however, no quantitative estimate on the thermal noise of these reflective structures exists. In this work we present a theoretical calculation of a grating reflector's noise. We further apply it to a proposed 3rd generation gravitational wave detector. Depending on the grating geometry, the grating material and the temperature we obtain a thermal noise decrease by up to a factor of ten compared to conventional dielectric mirrors. Thus the use of grating reflectors can substantially improve the noise performance in metrological applications.
17 pages, 11 figures
References in corpus (5)
- Thermo-optic noise in coated mirrors for high-precision optical measurements
- Monocrystalline AlGaAs heterostructures for high-reflectivity high-Q micromechanical resonators in the MHz regime
- Measurements of a low temperature mechanical dissipation peak in a single layer of Ta2O5 doped with TiO2
- Thermal noises and noise compensation in high-reflection multilayer coating
- Coating thermal noise of a finite-size cylindrical mirror
Cited by in corpus (6)
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- Advanced technologies for future ground-based, laser-interferometric gravitational wave detectors
- Upper Limit to the Transverse to Longitudinal Motion Coupling of a Waveguide Mirror