Circular dielectric cavity and its deformations
R. Dubertrand, E. Bogomolny, N. Djellali, M. Lebental, C. Schmit

TL;DR
This paper develops perturbation series for slightly deformed dielectric circular cavities, validating the formulas through numerical simulations and experiments, enhancing understanding of their optical properties.
Contribution
It introduces detailed perturbation formulas for deformed dielectric cavities and verifies their accuracy against simulations and experiments.
Findings
Perturbation formulas match numerical simulations.
Good agreement with far-field experimental data.
Enhanced understanding of cavity deformations' effects.
Abstract
The construction of perturbation series for slightly deformed dielectric circular cavity is discussed in details. The obtained formulae are checked on the example of cut disks. A good agreement is found with direct numerical simulations and far-field experiments.
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