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 |
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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. |
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ISSN: | 1041-1135 1941-0174 |
DOI: | 10.1109/68.874208 |