Journal
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
Volume 17, Issue 1-4, Pages 589-592Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S1386-9477(02)00877-9
Keywords
quantum dots; diode lasers; differential efficiency
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Long-wavelength (1.29 mum) lasers grown on GaAs and based on several planes of self-organized quantum dots in an external quantum well demonstrate significant improvement of the external differential efficiency (88%) and the characteristic temperature (150 K). This is due to suppression of carrier pile-up in the waveguide region in combination with extended range of optical loss in which the ground-state lasing survives. (C) 2002 Elsevier Science B.V. All rights reserved.
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