Self-Assembled InAs Quantum Dots on InP(001) for Long-Wavelength Laser Applications

ETRI Journal

关键词: laser;    InP (001);    growth behavior;    InAs quantum dots;   

Others  :  1185082
DOI  :  10.4218/etrij.04.0104.0028

【 摘 要 】

Self-assembled InAs quantum dots (QDs) embedded in an InAlGaAs matrix were grown on an InP (001) using a solid-source molecular beam epitaxy and investigated using transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. TEM images indicated that the QD formation was strongly dependent on the growth behaviors of group III elements during the deposition of InAlGaAs barriers. We achieved a lasing operation of around 1.5 µm at room temperature from uncoated QD lasers based on the InAlGaAs-InAlAs material system on the InP (001). The lasing wavelengths of the ridge-waveguide QD lasers were also dependent upon the cavity lengths due mainly to the gain required for the lasing operation.

   

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