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Low threshold 1.5 mu m tensile-strained single quantum well lasers

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10 Author(s)
Zah, C.E. ; Bellcore, Red Bank, NJ, USA ; Bhat, R. ; Pathak, B. ; Caneau, C.
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The authors have experimentally found that the threshold current density of 1.5 mu m tensile-strained single quantum well lasers decreases with increased tensile strain. A threshold current density as low as of 197 A/cm2 is obtained with an In0.3Ga0.7As well. With semi-insulating current blocking layers and high reflection facet coatings, a threshold current as low as 2 mA is obtained from 150 mu m long lasers and a maximum CW operation temperature of 135 degrees C is achieved from 1 mm long lasers.

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Electronics Letters  (Volume:27 ,  Issue: 16 )