Design, fabrication and optical characterization of quantum cascade lasers at terahertz frequencies using photonic crystal reflectors

We designed, fabricated and characterised electrically injected quantum cascade lasers with photonic crystal reflectors emitting at terahertz frequencies (3.75 THz). These in-plane emitting structures display typical threshold current densities of 420 A/cm2 and output powers of up to 2 mW under puls...

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Bibliographic Details
Published inOptics express Vol. 13; no. 22; pp. 8960 - 8968
Main Authors Dunbar, L Andrea, Moreau, Virginie, Ferrini, Rolando, Houdré, Romuald, Sirigu, Lorenzo, Scalari, Giacomo, Giovannini, Marcella, Hoyler, Nicolas, Faist, Jérôme
Format Journal Article
LanguageEnglish
Published United States 31.10.2005
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Summary:We designed, fabricated and characterised electrically injected quantum cascade lasers with photonic crystal reflectors emitting at terahertz frequencies (3.75 THz). These in-plane emitting structures display typical threshold current densities of 420 A/cm2 and output powers of up to 2 mW under pulsed excitation. The emission characteristics are shown to be robust, as with increasing current the emission remains singlemode with no drift in wavelength, this results from the narrow reflectivity band of the photonic crystal reflectors.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OPEX.13.008960