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A possible model for sustained oscillations (pulsations) in (Al,Ga)As double-heterostructure lasers

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2 Author(s)
Dixon, R.W. ; Bell Telephone Lab., Inc., Murray Hill, NJ, USA ; Joyce, W.

A model explaining the origins of sustained oscillations in (Al,Ga)As double-heterostructure lasers is proposed and plausibility arguments of its applicability are given. The model relies on saturable-absorber Q -switching to produce the pulsations, with the saturable absorption located near the ends of the laser in regions where surface recombination reduces the injected-carrier density. The sides of the active volume, or defects which cause carrier recombination within the active volume, may also cause such pulsations according to this model.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:15 ,  Issue: 6 )