Influence of carrier diffusion on the response of a resonant-cavity enhanced detector
Abstract
We have investigated the effects of carrier diffusion on the impulse response of a resonant-cavity enhanced photodetector using our analytic expression for a short-circuit current. Our theoretical results indicate that diffusion introduces a significant tail in the temporal response of photodetectors. We show that the influence of diffusion becomes significant as the absorption width decreases. A discrepancy in bandwidth as high as 35% between our results and previous theoretical predictions is observed.
Keywords:
Bandwidth / Diffusion / Impulse response / Quantum efficiency / Resonant-cavity-enhanced photodetectorSource:
IEEE Journal of Quantum Electronics, 2002, 38, 2, 197-202
DOI: 10.1109/3.980273
ISSN: 0018-9197