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Current dependence of pulsations in semiconductor lasers due to photon induced modulation of optical loss

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2 Author(s)
Chua, Soo-jin ; National University of Singapore, Kent Ridge, Singapore ; Chong, T.C.

Pulsations in semiconductor lasers are frequently observed to occur within a range of injection currents above threshold. A model is proposed to account for the existence of the current range and attributes it to a critical optical power level at which photon induced modulation of optical loss takes place, such as due to the effect of self-focusing or lateral mode deformation. This value is estimated to be 0.36 \times 10^{15} photons- cm-3for double heterostructure oxide-striped lasers.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:20 ,  Issue: 11 )