Three-Dimensional FDTD Simulation of Micro-pillar Microcavity Geometries Suitable for Efficient Single-photon Sources

Ying-Lung Daniel Ho, Tun Cao, P Ivanov, Martin J. Cryan, Ian James Craddock, Chris J. Railton, John G. Rarity

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

We present the results of calculations of the microcavity mode structure of distributed-Bragg-reflector (DBR) micro-pillar microcavities of group III-V semiconductor materials. These structures are suitable for making single photon sources when a single quantum dot is located at the center of a wavelength scale cavity. The 3-D finite difference time domain (FDTD) method is our primary simulation tool and results are validated against semi-analytic models. We show that high light extraction efficiencies can be achieved (>90%) limited by sidewall scattering and leakage. Using radial trench DBR microcavities or 2-D photonic crystal structures, we can further suppress sidewall emission, however, light is then redirected into other leaky modes
Original languageEnglish
Pages (from-to)462-472
Number of pages11
JournalIEEE Journal of Quantum Electronics
Volume43
Issue number6
Early online date21 May 2007
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

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