High-Q optomechanical GaAs nanomembranes

Jin Liu; K. Usami; A. Naesby; T. Bagci; E.S. Polzik; P. Lodahl; S. Stobbe

doi:10.1063/1.3668092

High-Q optomechanical GaAs nanomembranes

Jin Liu, K. Usami, A. Naesby, T. Bagci, E.S. Polzik, P. Lodahl, S. Stobbe

University of Copenhagen

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Abstract

We demonstrate that suspended single-crystal GaAs nanomembranes exhibit mechanical Q-factors exceeding 2 × 106 at room temperature, which makes them a very promising platform for optomechanics. Because of the completely removed substrate and their millimeter-scale lateral size, the membranes can be incorporated in macroscopic optical cavities for quantum optomechanics experiments. We have measured the mechanical mode spectrum and spatial profiles and find good agreements with theory. Our work paves the way for optomechanical experiments with direct band gap semiconductors in which not only radiation pressure but also other mechanisms involving embedded light emitters could be exploited for quantum optical control of massive mechanical systems. © 2011 American Institute of Physics.

Original language	English
Journal	Applied Physics Letters
Volume	99
Issue number	24
Pages (from-to)	243102
ISSN	0003-6951
DOIs	https://doi.org/10.1063/1.3668092
Publication status	Published - 2011

Bibliographical note

Copyright (2011) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters / Volume 99 / Issue 24 and may be found at http://apl.aip.org/resource/1/applab/v99/i24/p243102_s1.

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AU - Polzik, E.S.

AU - Lodahl, P.

AU - Stobbe, S.

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AB - We demonstrate that suspended single-crystal GaAs nanomembranes exhibit mechanical Q-factors exceeding 2 × 106 at room temperature, which makes them a very promising platform for optomechanics. Because of the completely removed substrate and their millimeter-scale lateral size, the membranes can be incorporated in macroscopic optical cavities for quantum optomechanics experiments. We have measured the mechanical mode spectrum and spatial profiles and find good agreements with theory. Our work paves the way for optomechanical experiments with direct band gap semiconductors in which not only radiation pressure but also other mechanisms involving embedded light emitters could be exploited for quantum optical control of massive mechanical systems. © 2011 American Institute of Physics.

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High-Q optomechanical GaAs nanomembranes

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