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5 terms
Photonics Dictionary: E
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detector x
E x
electro-optic detector
A device that detects radiation by utilizing the influence of light in forming an electrical signal. It may be a phototube; a photoconductive, photovoltaic or photojunction cell; a phototransistor;...
extrinsic detector
A photodetector composed of a semiconductor material whose responsive properties can be altered by the addition of impurities to the basic material. Copper- and mercury-doped germanium are both...
effective aperture
1. That portion of the aperture that functions to collect energy and deliver it to the final system detector. 2. For an obscured or noncircular aperture, the equivalent nonobscured, circular aperture.
electrode dark current
->
dark current
The current that flows in a photodetector when there is no optical radiation incident on the detector and operating voltages are applied.
excess noise factor
A factor, F, indicating the increase in shot noise in an avalanche photodiode as compared with the ideal multiplier, which is noiseless. The noise, which results from variations in avalanche gains,...
Photonics Dictionary
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