Smallest possible electromagnetic mode volume in a dielectric cavity
- 1 December 1998
- journal article
- Published by Institution of Engineering and Technology (IET) in IEE Proceedings - Optoelectronics
- Vol. 145 (6), 391-397
- https://doi.org/10.1049/ip-opt:19982468
Abstract
In photonic crystals, electromagnetic waves can be confined in all three dimensions – leading to very small mode volumes. A computational search has been made for the smallest electromagnetic mode volume which occurs in two-dimensional, dielectric photonic crystals slabs. The smallest mode volume found was V ≈ 2(λ/2n)3, where n is the refractive index. This small mode volume can lead to significant enhancement of spontaneous emission rates in semiconductor nano-cavities due to the Purcell effect.Keywords
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