Phys. Rev. B 71, 113415 (2005) - Nanoprobe control of morphology-dependent resonances of microspheres: A theoretical description

Nanoprobe control of morphology-dependent resonances of microspheres: A theoretical description

A. Giusto, S. Savasta, and R. Saija

Phys. Rev. B 71, 113415 – Published 31 March 2005

Abstract

We investigate theoretically the influence of a small metallic scatterer on the high- $Q$ whispering-gallery modes of a microsphere resonator. Our results provide a quantitative analysis of the effects of the near-field tip-microsphere interaction on the scattered field. This kind of interaction can be used to control the coupling of these modes with embedded or surrounding media.

Received 13 October 2004

DOI:https://doi.org/10.1103/PhysRevB.71.113415

©2005 American Physical Society

Authors & Affiliations

A. Giusto^*, S. Savasta, and R. Saija

Dipartimento di Fisica della Materia e Tecnologie Fisiche Avanzate, Università di Messina, Salita Sperone 31, I-98166 Messina, Italy

^*Electronic address: agiusto@ortica.unime.it

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Issue

Vol. 71, Iss. 11 — 15 March 2005

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