Calculation of thermal noise in grating reflectors

Heinert, D. et al. (2013) Calculation of thermal noise in grating reflectors. Physical Review D, 88(042001), (doi: 10.1103/PhysRevD.88.042001)

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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 third 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 10 compared to conventional dielectric mirrors. Thus the use of grating reflectors can substantially improve the noise performance in metrological applications.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Nawrodt, Dr Ronny and Hild, Professor Stefan and Leavey, Mr Sean and Martin, Dr Iain
Authors: Heinert, D., Kroker, S., Friedrich, D., Hild, S., Kley, E.-B., Leavey, S., Martin, I.W., Nawrodt, R., Tünnermann, A., Vyatchanin, S.P., and Yamamoto, K.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Physical Review D
Publisher:American Physical Society
ISSN:1550-7998
ISSN (Online):1550-2368

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
459311Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)PP/F001118/1P&A - PHYSICS & ASTRONOMY
459313Investigations in Gravitational Radiation.Sheila RowanScience & Technologies Facilities Council (STFC)ST/J000361/1P&A - PHYSICS & ASTRONOMY