Abstract
It is shown that cavities formed between a multilayer quarter-wave Bragg reflector and a metal mirror that support Tamm plasmons can be modeled by using a hard-mirror approximation, including appropriate penetration depths into the mirrors. Results from this model are in excellent agreement with those found by numerical methods. In addition, Tamm modes that are laterally confined by the presence of a metallic disk deposited on the Bragg reflector can be described by the effective index model that is commonly used for vertical-cavity surface-emitting lasers. This enables the lateral modes confined by a circular disk to be found from conventional weakly guiding waveguide theory similar to that used for optical fibers. The resonant wavelengths of these linearly polarized guided modes are calculated as functions of disk diameter and other parameters.
| Original language | English |
|---|---|
| Pages (from-to) | 125-130 |
| Number of pages | 6 |
| Journal | Journal of the Optical Society of America A |
| Volume | 36 |
| Issue number | 1 |
| Early online date | 19 Dec 2018 |
| DOIs | |
| Publication status | Published - 1 Jan 2019 |
Keywords
- Bragg reflectors
- Distributed Bragg reflectors
- Photon counting
- Refractive index
- Vertical cavity surface emitting lasers
- Waveguide modes
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Adams, M., Cemlyn, B., Henning, I., Parker, M., Harbord, E., & Oulton, R. (2019). Model for confined Tamm plasmon devices. Journal of the Optical Society of America A, 36(1), 125-130. https://doi.org/10.1364/JOSAB.36.000125