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Anomalous effect of carriers on dielectric constant of (In,Ga)(As,P) lasers operating at 1.3 ¿m wavelength

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1 Author(s)
Turley, S.E.H. ; Standard Telecommunication Laboratories Ltd., Harlow, UK

Injected carriers were found to reduce the dielectric constant of the active layer by the unexpectedly high value of 0.4. This is a factor of approximately four greater than measured for GaAs/(Ga, Al)As lasers and also higher than other reported values for (In,Ga)(As,P) lasers operating at a wavelength of 1.6 ¿m. The technique employed was the observation of the spectral shift of individual Fabry-Perot modes of oxide insulated stripe lasers down to very low currents below threshold.

Published in:

Electronics Letters  (Volume:18 ,  Issue: 14 )