White PaperPhotonics/Optics

Response Time of Semiconductor Photodiodes

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The effect of displacement currents due to dielectric relaxation of majority carriers in the charge-neutral region of a semiconductor photodiode is discussed. The dielectric relaxation is often neglected when treating the response time of photodiodes. We show that this component may dominate the slow response of not fully depleted photodiodes and has to be considered for correct analysis of silicon photodiode response to a brief laser pulse. Continue reading to learn more.

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