Low-threshold continuous-wave two-stack quantum-dot laser with reduced temperature sensitivity

Data are presented on continuous wave operation of two-stack quantum dot lasers designed with reduced temperature sensitivity in their threshold. The InAs quantum dots are designed to have a wide energy spacing (/spl sim/102 meV) between the ground and first excited radiative transitions. Selectivel...

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Veröffentlicht in:IEEE photonics technology letters 2000-09, Vol.12 (9), p.1120-1122
Hauptverfasser: Shchekin, O.B., Park, G., Huffaker, D.L., Mo, Q., Deppe, D.G.
Format: Artikel
Sprache:eng
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Zusammenfassung:Data are presented on continuous wave operation of two-stack quantum dot lasers designed with reduced temperature sensitivity in their threshold. The InAs quantum dots are designed to have a wide energy spacing (/spl sim/102 meV) between the ground and first excited radiative transitions. Selectively oxidized stripe lasers have continuous wave threshold currents as low as 1.2 mA for 2 μm wide stripes and minimum threshold current densities of 26 A/cm 2 for 13-μ-m wide stripes. Broad area lasers have continuous wave threshold current densities as low as 40 A/cm 2 , even for p-up mounting. Ground state lasing is obtained up to the highest temperature measured of 326 K.
ISSN:1041-1135
1941-0174
DOI:10.1109/68.874208