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AssigneeHamamatsu Photonics K. K.
InventorsYutaka Tsuchiya, Shinichiro Aoshima, Hironori Takahashi, Takuya Nakamura
Estimating the term…
A first part of input light containing both background light and signal light is extracted by a sampling streak tube and converted to a first electric signal by a photodetector. A second part of the input light containing only background light is extracted by the same sampling streak tube by offsetting the sampling timing and converted to a second electric signal by the photodetector. A signal component corresponding to the signal light is extracted by taking the difference between the first and second electric signals. In one embodiment, the sampling timing is offset by applying a chopping voltage to chopping electrodes provided in the sampling streak tube.
An optical signal detector for detecting signal light superposed on input light which contains background light, comprising:
Dependencies are inferred from the claim text.