Monte Carlo particle modeling of self-organization and pulsing in multiple quantum well infrared photodetectors

We report ensemble Monte Carlo (MC) particle modeling of nonequilibrium self-organization phenomena in QWIPs associated with the excitation of QW recharging waves. The QWIP response to step-like pulses of high power infrared radiation at constant bias voltage and to step-like pulses of applied voltage at constant intensity of radiation is studied. It is shown, generalizing our recent results, that stable periodic or near periodic electric-field domains and prolonged chaotic spatio-temporal pulsations of the electric field can occur in QWIPs. The spatio-temporal variations of the electric-field distributions are accompanied with pronounced pulsing of the photocurrent.