Radiative thermal noise for transmissive optics in gravitational-wave detectors

Sheila Dwyer and Stefan W. Ballmer
Phys. Rev. D 90, 043013 – Published 25 August 2014

Abstract

Radiative losses have traditionally been neglected in the calculation of thermal noise of transmissive optical elements because for the most commonly used geometries they are small compared to losses due to thermal conduction. We explore the use of such transmissive optical elements in extremely noise-sensitive environments such as the arm cavities of future gravitational-wave interferometers. This drives us to a geometry regime where radiative losses are no longer negligible. In this paper we derive the thermorefractive noise associated with such radiative losses and compare it to other known sources of thermal noise.

  • Received 21 July 2014

DOI:https://doi.org/10.1103/PhysRevD.90.043013

© 2014 American Physical Society

Authors & Affiliations

Sheila Dwyer1,* and Stefan W. Ballmer2,†

  • 1LIGO Hanford Observatory, P.O. Box 159, Richland, Washington 99352, USA
  • 2Department of Physics, Syracuse University, New York 13244, USA

  • *dwyer_s@ligo-wa.caltech.edu
  • sballmer@syr.edu

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Vol. 90, Iss. 4 — 15 August 2014

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