responsivity, $$R$$

Also contains definitions of: dark current, dark output, dark resistance, relative responsivity, spectral responsivity function, useful spectral range
https://doi.org/10.1351/goldbook.R05347
Detector input can be e.g. @[email protected], @[email protected], @[email protected] It produces a measurable detector output which may be e.g. an electrical charge, an electrical current or potential or a change in pressure. The ratio of the detector output and the detector input is defined as the responsivity. It is given in e.g. @[email protected]/@[email protected], @[email protected]/@[email protected] The responsivity is a special case of the general term @[email protected] Dark current is the term for the electrical output of a detector in the absence of input. This is a special case of the general term dark output. For photoconductive detectors the term dark resistance is used. If the responsivity is normalized with regard to that obtained from a reference radiation the resulting ratio is called relative responsivity. For measurements with monochromatic radiation at a given @[email protected] the term @[email protected] $$R(\lambda)$$ is used. In some cases the @[email protected], where the @[email protected] is normalized with respect to the responsivity at some given @[email protected], is used. The dependence of the @[email protected] on the @[email protected] is described by the spectral responsivity function. The useful spectral range of the detector should be given as the @[email protected] range where the relative responsivity does not fall below a specified value.
Source:
PAC, 1995, 67, 1745. (Nomenclature, symbols, units and their usage in spectrochemical analysis-XI. Detection of radiation (IUPAC Recommendations 1995)) on page 1749 [Terms] [Paper]