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Alq coated silicon nanomembranes for cavity optomechanics

Proceedings of SPIE - The International Society for Optical Engineering, ISSN: 1996-756X, Vol: 9922
2016
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Conference Paper Description

The optomechanical properties of a silicon-nitride membrane mirror covered by Alq and Silver layers are investigated. Excitation at two laser wavelengths, 780 and 405 nm, corresponding to different absorptions of the multilayer, is examined. Such dual driving will lead to a more flexible optomechanical operation. Topographic reconstruction of the whole static membrane deformation and cooling of the membrane oscillations are reported. The cooling, observed for blue laser detuning and produced by bolometric forces, is deduced from the optomechanical damping of the membrane eigenfrequency. We detemine the presence of different contributions to the photothermal response of the membrane.

Bibliographic Details

Kishan Dholakia; Gabriel C. Spalding; F. Fogliano; A. Ortu; A. Camposeo; D. Pisignano; D. Ciampini; F. Fuso; E. Arimondo

SPIE-Intl Soc Optical Eng

Materials Science; Physics and Astronomy; Computer Science; Mathematics; Engineering

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