Light-matter interaction in open cavities with dielectric stacks

We evaluate the exact dipole coupling strength between a single emitter and the radiation field within an optical cavity, taking into account the effects of multilayer dielectric mirrors. Our model allows one to freely vary the resonance frequency of the cavity, the frequency of light or atomic tran...

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Bibliographic Details
Published in:Applied physics letters 2021-04, Vol.118 (15)
Main Authors: Saharyan, Astghik, Álvarez, Juan-Rafael, Doherty, Thomas H., Kuhn, Axel, Guérin, Stéphane
Format: Article
Language:English
Subjects:
Applied physics
Dielectric strength
Dipole interactions
Emitters
Holes
Multilayers
Open systems
Physics
Radiation
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Summary:We evaluate the exact dipole coupling strength between a single emitter and the radiation field within an optical cavity, taking into account the effects of multilayer dielectric mirrors. Our model allows one to freely vary the resonance frequency of the cavity, the frequency of light or atomic transition addressing it, and the design wavelength of the dielectric mirror. The coupling strength is derived for an open system with unbound frequency modes. For very short cavities, the effective length used to determine their mode volume and the lengths defining their resonances are different, and also found to diverge appreciably from their geometric length, with the radiation field being strongest within the dielectric mirror itself. Only for cavities much longer than their resonant wavelength does the mode volume asymptotically approach that normally assumed from their geometric length.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0047145