A hemispherical, high-solid-angle optical micro-cavity for cavity-QED studies

Guoqiang Cui, J. M. Hannigan, R. Loeckenhoff, F. M. Matinaga, M. G. Raymer, S. Bhongale, M. Holland, S. Mosor, S. Chatterjee, H. M. Gibbs, G. Khitrova

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


We report a novel hemispherical micro-cavity that is comprised of a planar integrated semiconductor distributed Bragg reflector (DBR) mirror, and an external, concave micro-mirror having a radius of curvature 50μm. The integrated DBR mirror containing quantum dots (QD), is designed to locate the QDs at an antinode of the field in order to maximize the interaction between the QD and cavity. The concave micro-mirror, with high-reflectivity over a large solid-angle, creates a diffraction-limited (sub-micron) mode-waist at the planar mirror, leading to a large coupling constant between the cavity mode and QD. The half-monolithic design gives more spatial and spectral tuning abilities, relatively to fully monolithic structures. This unique micro-cavity design will potentially enable us to both reach the cavity quantum electrodynamics (QED) strong coupling regime and realize the deterministic generation of single photons on demand.

Original languageEnglish (US)
Pages (from-to)2289-2299
Number of pages11
JournalOptics Express
Issue number6
StatePublished - Mar 2006

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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