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This article is cited in 1 scientific paper (total in 1 paper)
OPTICS AND NUCLEAR PHYSICS
Towards $\mathcal{PT}$-symmetric optical dimer fabrication without a light-absorbing material
A. A. Dmitrieva, K. V. Baryshnikovaa, M. V. Rybinab a School of Physics and Engineering, ITMO University, St. Petersburg, 197101 Russia
b Ioffe Institute, St. Petersburg, 194021 Russia
Abstract:
We consider an approach to engineer an optical dimer of particles operating in the spectral region near the dipolar resonance that exhibits parity–time symmetry-like features. Both particles are assumed to be made of a gain medium with the same refractive index and extinction coefficient. We suggest introducing a gain–loss contrast by altering the radiative loss of the particles through changing their shape. To demonstrate our approach, we consider a dimer of infinite filled and hollow cylinders. We demonstrate that a larger hollow diameter leads to a stronger radiative decay. Then we find the parameters of a dimer that has an exceptional point at a real frequency and exhibits two real eigenfrequencies when the gain–loss contrast is decreased.
Received: 30.03.2023 Revised: 17.04.2023 Accepted: 28.04.2023
Citation:
A. A. Dmitriev, K. V. Baryshnikova, M. V. Rybin, “Towards $\mathcal{PT}$-symmetric optical dimer fabrication without a light-absorbing material”, Pis'ma v Zh. Èksper. Teoret. Fiz., 117:11 (2023), 808–813; JETP Letters, 117:11 (2023), 804–809
Linking options:
https://www.mathnet.ru/eng/jetpl6952 https://www.mathnet.ru/eng/jetpl/v117/i11/p808
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Abstract page: | 41 | References: | 13 | First page: | 3 |
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