Room temperature continuous wave operation and controlled spontaneous emission in ultrasmall photonic crystal nanolaser

Photonic crystal slab enables us to form an ultrasmall laser cavity with a modal volume close to the diffraction limit of light. However, the thermal resistance of such nanolasers, as high as 10(6) K/W, has prevented continuous-wave operation at room temperature. The present paper reports on the fir...

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Bibliographic Details
Published inOptics express Vol. 15; no. 12; pp. 7506 - 7514
Main Authors Nozaki, Kengo, Kita, Shota, Baba, Toshihiko
Format Journal Article
LanguageEnglish
Published United States 11.06.2007
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Summary:Photonic crystal slab enables us to form an ultrasmall laser cavity with a modal volume close to the diffraction limit of light. However, the thermal resistance of such nanolasers, as high as 10(6) K/W, has prevented continuous-wave operation at room temperature. The present paper reports on the first successful continuous-wave operation at room temperature for the smallest nanolaser reported to date, achieved through fabrication of a laser with a low threshold of 1.2 muW. Near-thresholdless lasing and spontaneous emission enhancement due to the Purcell effect are also demonstrated in a moderately low Q nanolaser, both of which are well explained by a detailed rate equation analysis.
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ISSN:1094-4087
1094-4087
DOI:10.1364/oe.15.007506