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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Bibliographic Details
Published in:IEEE photonics technology letters 2000-09, Vol.12 (9), p.1120-1122
Main Authors: Shchekin, O.B., Park, G., Huffaker, D.L., Mo, Q., Deppe, D.G.
Format: Article
Language:English
Subjects:
Continuous wave
Density
Grounds
Land surface temperature
Laser excitation
Laser transitions
Lasers
Lasing
Mounting
Quantum dot lasers
Quantum dots
Quantum well lasers
Semiconductor lasers
Stationary state
Temperature measurement
Temperature sensors
Threshold current
Threshold currents
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Summary: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