dorsal/arxiv
View SchemaOptimization of three-dimensional micropost microcavities for cavity quantum electrodynamics
| Authors | Jelena Vuckovic, Matthew Pelton, Axel Scherer, Yoshihisa Yamamoto |
|---|---|
| Categories | |
| ArXiv ID | quant-ph/0208134 |
| URL | https://arxiv.org/abs/quant-ph/0208134 |
| DOI | 10.1103/PhysRevA.66.023808 |
| Journal | Physical Review A, vol. 66, article 023808, August 2002 |
Abstract
This article presents a detailed analysis, based on the first-principles finite-difference time-domain method, of the resonant frequency, quality factor (Q), mode volume (V), and radiation pattern of the fundamental (HE11) mode in a three-dimensional distributed-Bragg-reflector (DBR) micropost microcavity. By treating this structure as a one-dimensional cylindrical photonic crystal containing a single defect, we are able to push the limits of Q/V beyond those achievable by standard micropost designs, based on the simple rules established for planar DBR microcavities. We show that some of the rules that work well for designing large-diameter microposts (e.g., high-refractive index contrast) fail to provide high-quality cavities with small diameters. By tuning the thicknesses of mirror layers and the spacer, the number of mirror pairs, the refractive indices of high and low refractive index regions, and the cavity diameter, we are able to achieve Q as high as 10^4, together with a mode volume of 1.6 cubic wavelengths of light in the high-refractive-index material. The combination of high Q and small V makes these structures promising candidates for the observation of such cavity quantum electrodynamics phenomena as strong coupling between a quantum dot and the cavity field, and single-quantum-dot lasing.
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"abstract": "This article presents a detailed analysis, based on the first-principles\nfinite-difference time-domain method, of the resonant frequency, quality factor\n(Q), mode volume (V), and radiation pattern of the fundamental (HE11) mode in a\nthree-dimensional distributed-Bragg-reflector (DBR) micropost microcavity. By\ntreating this structure as a one-dimensional cylindrical photonic crystal\ncontaining a single defect, we are able to push the limits of Q/V beyond those\nachievable by standard micropost designs, based on the simple rules established\nfor planar DBR microcavities. We show that some of the rules that work well for\ndesigning large-diameter microposts (e.g., high-refractive index contrast) fail\nto provide high-quality cavities with small diameters. By tuning the\nthicknesses of mirror layers and the spacer, the number of mirror pairs, the\nrefractive indices of high and low refractive index regions, and the cavity\ndiameter, we are able to achieve Q as high as 10^4, together with a mode volume\nof 1.6 cubic wavelengths of light in the high-refractive-index material. The\ncombination of high Q and small V makes these structures promising candidates\nfor the observation of such cavity quantum electrodynamics phenomena as strong\ncoupling between a quantum dot and the cavity field, and single-quantum-dot\nlasing.",
"arxiv_id": "quant-ph/0208134",
"authors": [
"Jelena Vuckovic",
"Matthew Pelton",
"Axel Scherer",
"Yoshihisa Yamamoto"
],
"categories": [
"quant-ph"
],
"doi": "10.1103/PhysRevA.66.023808",
"journal_ref": "Physical Review A, vol. 66, article 023808, August 2002",
"title": "Optimization of three-dimensional micropost microcavities for cavity quantum electrodynamics",
"url": "https://arxiv.org/abs/quant-ph/0208134"
},
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