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Reducing thermal effects in mirrors of advanced gravitational wave interferometric detectors

Jean-Yves Vinet

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We present an analytical model of temperature distribution, of thermal lensing and thermal distortion for a cylindrical mirror reflecting a large class of optical readout beams with a weak absorption rate in the coating. It is shown that non-traditional beam geometries could reduce the thermal lensing in the substrate and the thermal distortion of the surface by orders of magnitude.


PACS

04.80.Nn Gravitational wave detectors and experiments

42.79.Bh Lenses, prisms and mirrors

07.60.Ly Interferometers

MSC

33C10 Bessel and Airy functions, cylinder functions, 0F1

78A60 Lasers, masers, optical bistability, nonlinear optics (See also 81V80)

83C35 Gravitational waves

Subjects

Instrumentation and measurement

Optics, quantum optics and lasers

Gravitation and cosmology

Dates

Issue 15 (7 August 2007)

Received 16 March 2007, in final form 29 May 2007

Published 17 July 2007



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