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Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling

Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling

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Prüfsumme: MD5:1aae0bacde65ce444b9e3720d826b2cb

ANETSBERGER, Georg, Eva M. WEIG, Jörg P. KOTTHAUS, Tobias J. KIPPENBERG, 2011. Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling. In: Comptes Rendus Physique. 12(9-10), pp. 800-816. ISSN 1631-0705. Available under: doi: 10.1016/j.crhy.2011.10.012

@article{Anetsberger2011Cavit-23492, title={Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling}, year={2011}, doi={10.1016/j.crhy.2011.10.012}, number={9-10}, volume={12}, issn={1631-0705}, journal={Comptes Rendus Physique}, pages={800--816}, author={Anetsberger, Georg and Weig, Eva M. and Kotthaus, Jörg P. and Kippenberg, Tobias J.} }

Nanomechanical oscillators are at the heart of a variety of precision measurements. This article reports on dispersive radiation coupling of nanomechanical oscillators to the evanescent near-field of toroid optical microresonators. The optomechanical coupling coefficient which reaches values >200 MHz/nm>200 MHz/nm, corresponding to a vacuum optomechanical coupling rate >4 kHz>4 kHz, is characterized in detail and good agreement between experimental, analytical and finite element simulation based values is found. It is shown that both the mode-structure and -patterns of nanomechanical oscillators can be characterized relying solely on Brownian motion. Moreover, it is demonstrated that the radiation pressure interaction can cause self-sustained coherent nanomechanical oscillations at nano-Watt power levels as well as cooling of the nanomechanical oscillator. Finally, the feasibility of coupling nanomechanical motion to two optical modes where the optical mode spacing exactly equals the mechanical resonance frequency is demonstrated for the first time. As shown here, this Raman-type scheme allows both amplification and cooling. Optomécanique en cavité et refroidissement de nanorésonateurs mécaniques par couplage en champ proche à un microtore Anetsberger, Georg Anetsberger, Georg eng 2013-06-06T05:59:09Z Kotthaus, Jörg P. Kippenberg, Tobias J. Kippenberg, Tobias J. Cavity optomechanics and cooling nanomechanical oscillators using microresonator enhanced evanescent near-field coupling 2011 Kotthaus, Jörg P. Comptes Rendus Physique ; 12 (2011), 9-10. - S. 800-816 Weig, Eva M. Weig, Eva M. deposit-license 2013-06-06T05:59:09Z

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