Non-linear Dynamics in Stripe Geometry Alx Ga(1-x) As Semiconductor Lasers: Experimental Results and Theoretical Analysis PDF

Keywords

semiconductors, lasers, non-linear dynamics

Abstract

Experimental results on transient phenomena in semiconductor lasers are reported. A travelling-wave rate equation model for the investigation of the non-linear dynamics and chaos in semiconductor lasers is presented. The model includes the effects of defects which act as optically saturable absorbing centres, external cavity optical feedback, and the coefficient of spontaneous emission coupled into the lasing modes. Numerical results and analytical solutions confirm that the increase of density of saturable absorbers decreases the onset frequency of pulsations. Furthermore, these results provide strong evidence of chaotic dynamics in semiconductor lasers corporated with external cavity.