Tuning Leaky Nanocavity Resonances - Perturbation Treatment

Details Tuning Leaky Nanocavity Resonances - Perturbation Treatment Tuning Leaky Nanocavity Resonances - Perturbation Treatment

2010-03-03

arxiv.org/abs/1003.0872v1

Physics

Optics

19 pages, 2 figures, 1 table, Submitted to Nano-Letters on 25-Oct-2009

Scientific paper

Adiabatic frequency tuning of finite-lifetime-nanocavity electromagnetic modes affects also their quality-factor (Q). Perturbative Q change resulting from (real) frequency tuning, is a controllable parameter. Here, the influence of dielectric constant modulation (DCM) on cavity resonances is presented, by first order perturbation analysis for a 3D cavity with radiation losses. Semi-analytical expressions for DCM induced cavity mode frequency and Q changes are derived. The obtained results are in good agreement with numerical calculations.

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