23 February 2006 Quantum dot spontaneous emission lifetime modification in optical microcavities using oxide apertured micropillars
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Proceedings Volume 6101, Laser Beam Control and Applications; 61010W (2006); doi: 10.1117/12.669580
Event: Lasers and Applications in Science and Engineering, 2006, San Jose, California, United States
Abstract
An oxide aperture is used to confine optical modes in a micropillar structure. This method overcomes the limitations due to sidewall scattering loss typical in semiconductor etched micropillars. High cavity quality factors (Q) up to 48 000 are determined by external Fabry-Perot cavity scanning measurements, a significantly higher value than prior work in III-V etched micropillars. Measured Q values and estimated mode volumes correspond to a maximum Purcell factor figure of merit value of 72. A Purcell Factor of 2.5 is experimentally observed from a single quantum dot emitter coupled to a high Q cavity mode.
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N. G. Stoltz, M. Rakher, S. Strauf, D. Bouwmeester, P. M. Petroff, L. A. Coldren, "Quantum dot spontaneous emission lifetime modification in optical microcavities using oxide apertured micropillars", Proc. SPIE 6101, Laser Beam Control and Applications, 61010W (23 February 2006); doi: 10.1117/12.669580; https://doi.org/10.1117/12.669580
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KEYWORDS
Oxides

Optical microcavities

Mirrors

Quantum dots

Aluminum

Picosecond phenomena

Scattering

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