Room-temperature, monolithic, electrically-pumped type-L quantum-well SB-based VCSELS emitting at 2.3 mm |
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Authors: | Cerutti L Ducanchez A Grech P Garnache A Genty F |
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Affiliation: | Univ. Montpellier 2, Montpellier; |
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Abstract: | An all-epitaxial monolithic vertical cavity surface emitting laser grown on GaSb substrate is presented. The structure is composed of two n-doped AlAsSb/GaSb distributed Bragg reflectors, a type-I GalnAsSb/AlGaAsSb multi-quantum-well active region and a tunnel junction. Quasi continuous-wave laser operation is demonstrated at 2.3 mum up to room temperature. Threshold current densities of 0.8 and 0.6 kA/cm-2 are obtained at 300 and 280 K for 80 mum-diameter devices (1 mus pulses, 10% duty cycle). A peak output optical power of 2 mW was achieved at 280 K. |
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