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Title: Cavity optomechanics in gallium phosphide microdisks

Abstract

We demonstrate gallium phosphide (GaP) microdisk optical cavities with intrinsic quality factors >2.8 × 10{sup 5} and mode volumes <10(λ/n){sup 3}, and study their nonlinear and optomechanical properties. For optical intensities up to 8.0 × 10{sup 4} intracavity photons, we observe optical loss in the microcavity to decrease with increasing intensity, indicating that saturable absorption sites are present in the GaP material, and that two-photon absorption is not significant. We observe optomechanical coupling between optical modes of the microdisk around 1.5 μm and several mechanical resonances, and measure an optical spring effect consistent with a theoretically predicted optomechanical coupling rate g{sub 0}/2π∼30 kHz for the fundamental mechanical radial breathing mode at 488 MHz.

Authors:
;  [1]
  1. National Institute for Nanotechnology, 11421 Saskatchewan Dr. NW, Edmonton, Alberta T6G 2M9 (Canada)
Publication Date:
OSTI Identifier:
22261556
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 104; Journal Issue: 14; Other Information: (c) 2014 Crown; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; COUPLING; GALLIUM; GALLIUM PHOSPHIDES; OPTICAL MODES; PHOTONS; QUALITY FACTOR

Citation Formats

Mitchell, Matthew, Barclay, Paul E., E-mail: pbarclay@ucalgary.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr. NW, Edmonton, Alberta T6G 2M9, and Hryciw, Aaron C. Cavity optomechanics in gallium phosphide microdisks. United States: N. p., 2014. Web. doi:10.1063/1.4870999.
Mitchell, Matthew, Barclay, Paul E., E-mail: pbarclay@ucalgary.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr. NW, Edmonton, Alberta T6G 2M9, & Hryciw, Aaron C. Cavity optomechanics in gallium phosphide microdisks. United States. https://doi.org/10.1063/1.4870999
Mitchell, Matthew, Barclay, Paul E., E-mail: pbarclay@ucalgary.ca, National Institute for Nanotechnology, 11421 Saskatchewan Dr. NW, Edmonton, Alberta T6G 2M9, and Hryciw, Aaron C. 2014. "Cavity optomechanics in gallium phosphide microdisks". United States. https://doi.org/10.1063/1.4870999.
@article{osti_22261556,
title = {Cavity optomechanics in gallium phosphide microdisks},
author = {Mitchell, Matthew and Barclay, Paul E., E-mail: pbarclay@ucalgary.ca and National Institute for Nanotechnology, 11421 Saskatchewan Dr. NW, Edmonton, Alberta T6G 2M9 and Hryciw, Aaron C.},
abstractNote = {We demonstrate gallium phosphide (GaP) microdisk optical cavities with intrinsic quality factors >2.8 × 10{sup 5} and mode volumes <10(λ/n){sup 3}, and study their nonlinear and optomechanical properties. For optical intensities up to 8.0 × 10{sup 4} intracavity photons, we observe optical loss in the microcavity to decrease with increasing intensity, indicating that saturable absorption sites are present in the GaP material, and that two-photon absorption is not significant. We observe optomechanical coupling between optical modes of the microdisk around 1.5 μm and several mechanical resonances, and measure an optical spring effect consistent with a theoretically predicted optomechanical coupling rate g{sub 0}/2π∼30 kHz for the fundamental mechanical radial breathing mode at 488 MHz.},
doi = {10.1063/1.4870999},
url = {https://www.osti.gov/biblio/22261556}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 14,
volume = 104,
place = {United States},
year = {Mon Apr 07 00:00:00 EDT 2014},
month = {Mon Apr 07 00:00:00 EDT 2014}
}