Optical-fiber based measurement of an ultra-small volume high-Q photonic crystal microcavity

Abstract

A two-dimensional photonic crystal semiconductor microcavity with a quality factor Q ~ 40,000 and a modal volume Veff ~ 0.9 cubic wavelengths is demonstrated. A micron-scale optical fiber taper is used as a means to probe both the spectral and spatial properties of the cavity modes, allowing not only measurement of modal loss, but also the ability to ascertain the in-plane localization of the cavity modes. This simultaneous demonstration of high-Q and ultra-small Veff in an optical microcavity is of potential interest in quantum optics, nonlinear optics, and optoelectronics. In particular, the measured Q and Veff values could enable strong coupling to both atomic and quantum dot systems in cavity quantum electrodynamics.

arXiv comment4 pages, 4 figures

References in corpus (2)

• Experimental demonstration of a high quality factor photonic crystal microcavity
• Feasibility of detecting single atoms using photonic bandgap cavities

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