Photodetector and photodetection system

Abstract

There is provided a photodetector. The photodetector according to an embodiment of the present disclosure includes a first substrate, a second substrate, and an optical circuit. The first substrate includes a photoelectric conversion element that photoelectrically converts light. The second substrate includes at least a portion of a processing circuit configured to execute signal processing of a first signal generated on a basis of electric charge converted by the photoelectric conversion element. The second substrate is stacked on the first substrate. The optical circuit is configured to output a first optical signal based on the first signal.

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