Single mode interband cascade lasers based on lateral metal gratings

Single mode distributed feedback (DFB) interband cascade lasers were realized by placing metal gratings laterally to dry etched ridges. A discrete tuning range of 104 nm could be realized on the same gain material by a variation of the grating period. At room temperature, a 2.4 mm long and 9.8 μm wi...

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Veröffentlicht in:Applied physics letters 2014-08, Vol.105 (7)
Hauptverfasser: Weih, Robert, Nähle, Lars, Höfling, Sven, Koeth, Johannes, Kamp, Martin
Format: Artikel
Sprache:eng
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Zusammenfassung:Single mode distributed feedback (DFB) interband cascade lasers were realized by placing metal gratings laterally to dry etched ridges. A discrete tuning range of 104 nm could be realized on the same gain material by a variation of the grating period. At room temperature, a 2.4 mm long and 9.8 μm wide ridge with as-cleaved facets emitted more than 6 mW of single mode output power in continuous-wave (cw) mode at a wavelength around 3.8 μm. With typical temperature- and current-tuning rates of 0.31 nm/ °C and 0.065 nm/mA, respectively, a total tuning bandwidth of more than 10 nm could be covered with a single device.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4893788