Enhanced light emission from InAs quantum dots in single-defect photonic crystal microcavities at room temperature

W. Y. Chen*, Wen-Hao Chang, H. S. Chang, T. M. Hsu, Chien Chieh Lee, Chii Chang Chen, P. G. Luan, J. Y. Chang, T. P. Hsieh, J. I. Chyi

*Corresponding author for this work

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14 Scopus citations

Abstract

The optical properties of InAs quantum dots with photonic crystal microcavity emitting near 1.3 μm were investigated at room temperature. The photoluminescence (PL) intensity for quantum dots in cavity was enhanced by two orders of magnitude. The large PL enhancement was attributed to the effects combining the improved extraction efficiency and the enhanced spontaneous emission rate due to the Purcell effect. A threefold Purcell enhancement is observed at room temperature, which is predominantly achieved by the very small mode volume of the photonic crystal microcavity.

Original languageEnglish
Article number071111
JournalApplied Physics Letters
Volume87
Issue number7
DOIs
StatePublished - 15 Aug 2005

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