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Low-threshold current density 1.3-μm InAs quantum-dot lasers with the dots-in-a-well (DWELL) structure

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5 Author(s)
Stintz, A. ; Center for High Technol. Mater., New Mexico Univ., Albuquerque, NM, USA ; Liu, G.T. ; Li, H. ; Lester, L.F.
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The wavelength of InAs quantum dots in an In/sub 0.15/Ga/sub 0.85/As quantum-well (DWELL) lasers grown on a GaAs substrate has been extended to 1.3-μm. The quantum dot lasing wavelength is sensitive to growth conditions and sample thermal history resulting in blue shifts as much as 73 nm. The room temperature threshold current density is 42.6 A cm/sup -2/ for 7.8-mm cavity length cleaved facet lasers under pulsed operation.

Published in:

Photonics Technology Letters, IEEE  (Volume:12 ,  Issue: 6 )