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GaAs0.7Sb0.3/GaAs type-II quantum-well laser with adjacent InAs quantum-dot layer

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3 Author(s)
Lin, Y.R. ; Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei ; Lin, H.H. ; Chu, J.H.

A GaAs0.7Sb0.3/GaAs type-II quantum-well laser with a InAs quantum-dot (QD) layer adjacent to the well is reported. The laser shows much lower threshold current density, lower internal loss and higher characteristic temperature than the device without adjacent QDs. The better performances are attributed to additional dimensional confinement, resulting from a spatial potential fluctuation induced by the adjacent QDs, for carriers in the active region of the laser.

Published in:

Electronics Letters  (Volume:45 ,  Issue: 13 )

Date of Publication:

June 18 2009

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