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Proceedings Paper

Multi-layered resonators for optimized electric field detection
Author(s): Tindaro Ioppolo; Volkan Ötügen
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Paper Abstract

In this study, we carry out an analytical investigation to determine the efficacy of multi-layer dielectric micro-sphere resonators as high-resolution electric field sensors. The use of a large number of layers with different electrical and mechanical properties allows for optimum dielectric constant and elastic modulus gradients within the sphere to optimize sphere resonator’s sensitivity to external electric field. The external electric field applied to a dielectric sphere induces an elastic deformation of the resonator (electrostriction effect), leading to shifts in its whispering gallery optical modes (WGM). The non-uniform distribution of the dielectric constant leads to a gradient in the electric field within the sphere. This in turn induces non-uniform body force on the sphere when subjected to an external electric field. By also appropriately varying the elastic modulus of the layers, the electrostictive deformation of the sphere can be optimized. In this paper we present a mathematical model describing the effect of the electric field on the WGM shift of layered micro-spherical resonators.

Paper Details

Date Published: 4 March 2014
PDF: 7 pages
Proc. SPIE 8960, Laser Resonators, Microresonators, and Beam Control XVI, 89600J (4 March 2014); doi: 10.1117/12.2044036
Show Author Affiliations
Tindaro Ioppolo, Southern Methodist Univ. (United States)
Volkan Ötügen, Southern Methodist Univ. (United States)


Published in SPIE Proceedings Vol. 8960:
Laser Resonators, Microresonators, and Beam Control XVI
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko; Lutz Aschke; Kunihiko Washio, Editor(s)

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