Photoelastic coupling in gallium arsenide optomechanical disk resonators

Baker, Christopher, Hease, William, Nguyen, Dac-Trung, Andronico, Alessio, Ducci, Sara, Leo, Giuseppe and Favero, Ivan (2014) Photoelastic coupling in gallium arsenide optomechanical disk resonators. Optics Express, 22 12: 14072-14086. doi:10.1364/OE.22.014072

Author Baker, Christopher
Hease, William
Nguyen, Dac-Trung
Andronico, Alessio
Ducci, Sara
Leo, Giuseppe
Favero, Ivan
Title Photoelastic coupling in gallium arsenide optomechanical disk resonators
Journal name Optics Express   Check publisher's open access policy
ISSN 1094-4087
Publication date 2014-06-16
Year available 2014
Sub-type Article (original research)
DOI 10.1364/OE.22.014072
Open Access Status DOI
Volume 22
Issue 12
Start page 14072
End page 14086
Total pages 15
Place of publication Washington, DC United States
Publisher Optical Society of America
Language eng
Formatted abstract
We analyze the magnitude of the radiation pressure and electrostrictive stresses exerted by light confined inside GaAs semiconductor WGM optomechanical disk resonators, through analytical and numerical means, and find the electrostrictive stress to be of prime importance. We investigate the geometric and photoelastic optomechanical coupling resulting respectively from the deformation of the disk boundary and from the strain-induced refractive index changes in the material, for various mechanical modes of the disks. Photoelastic optomechanical coupling is shown to be a predominant coupling mechanism for certain disk dimensions and mechanical modes, leading to total coupling gom and g0 reaching respectively 3 THz/nm and 4 MHz. Finally, we point towards ways to maximize the photoelastic coupling in GaAs disk resonators, and we provide some upper bounds for its value in various geometries.
Keyword Optics
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Mathematics and Physics
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Citation counts: TR Web of Science Citation Count  Cited 24 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 23 times in Scopus Article | Citations
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Created: Wed, 25 Nov 2015, 03:06:11 EST by Christopher Baker on behalf of School of Mathematics & Physics