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Gain and threshold characteristics of strain-compensated multiple-quantum-well lasers

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3 Author(s)
Briggs, A.T.R. ; BNR Europe Ltd., Essex, UK ; Greene, P.D. ; Jowett, J.M.

Strain-compensated multiple-quantum-well (MQW) lasers with an operating wavelength near 1.5 mu m have been grown by low-pressure OMVPE. A simple growth method was used to achieve zero net strain structures having InGaAs wells with 1.1% compressive strain and InGaAsP barriers with compensating tension. Broad stripe laser structures with three, six, and nine wells were characterized and the gain coefficient per well is shown to be related to the logarithm of the current density per well. A threshold current density of 451 A/cm/sup -2/ was obtained for a structure with three wells, uncoated facets, and a cavity length of 2 mm.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:4 ,  Issue: 5 )