Highly efficient optical pumping of photonic crystal nanocavity lasers using cavity resonant excitation

The authors demonstrate highly efficient optical pumping of photonic crystal (PhC) nanocavity lasers with InGaAs single quantum wells (QWs) using cavity resonant excitation at 10 K . The laser threshold power is largely reduced when the central wavelength of the excitation pulse is resonant with a h...

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Bibliographic Details
Published in:Applied physics letters 2006-10, Vol.89 (16), p.161111-161111-3
Main Authors: Nomura, Masahiro, Iwamoto, Satoshi, Nishioka, Masao, Ishida, Satomi, Arakawa, Yasuhiko
Format: Article
Language:English
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Summary:The authors demonstrate highly efficient optical pumping of photonic crystal (PhC) nanocavity lasers with InGaAs single quantum wells (QWs) using cavity resonant excitation at 10 K . The laser threshold power is largely reduced when the central wavelength of the excitation pulse is resonant with a higher-order cavity mode. The localized excitation by the cavity resonant effect increases the effective absorption of the QW region in the nanocavity. The direct photocarrier generation in the QW also results in the highly efficient optical pumping. This cavity resonant excitation technique can lower the laser threshold of PhC nanocavity lasers and avoid detrimental device heating.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.2369543