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- Specific_detectivity abstract "Specific detectivity, or D*, for a photodetector is a figure of merit used to characterize performance, equal to the reciprocal of noise-equivalent power (NEP), normalized per square root of the sensor's area and frequency bandwidth (reciprocal of its sampling rate). Specific detectivity is given by , where is the area of the photosensitive region of the detector and is the frequency bandwidth. It is commonly expressed in Jones units in honor of R. Clark Jones who originally defined it.Given that noise-equivalent power can be expressed as a function of the responsivity (in units of or ) and the noise spectral density (in units of or ) as , it's common to see the specific detectivity expressed as .It is often useful to express the specific detectivity in terms of relative noise levels present in the device. A common expression is given below.With q as the electronic charge, is the wavelength of interest, h is Planck's constant, c is the speed of light, k is Boltzmann's constant, T is the temperature of the detector, is the zero-bias dynamic resistance area product (often measured experimentally, but also expressible in noise level assumptions), is the quantum efficiency of the device, and is the total flux of the source (often a blackbody) in photons/sec/cm².".
- Specific_detectivity wikiPageID "41727".
- Specific_detectivity wikiPageRevisionID "599956942".
- Specific_detectivity hasPhotoCollection Specific_detectivity.
- Specific_detectivity subject Category:Infrared_imaging.
- Specific_detectivity subject Category:Physical_quantities.
- Specific_detectivity type Abstraction100002137.
- Specific_detectivity type Measure100033615.
- Specific_detectivity type PhysicalQuantities.
- Specific_detectivity comment "Specific detectivity, or D*, for a photodetector is a figure of merit used to characterize performance, equal to the reciprocal of noise-equivalent power (NEP), normalized per square root of the sensor's area and frequency bandwidth (reciprocal of its sampling rate). Specific detectivity is given by , where is the area of the photosensitive region of the detector and is the frequency bandwidth. It is commonly expressed in Jones units in honor of R.".
- Specific_detectivity label "Détectivité spécifique".
- Specific_detectivity label "Specific detectivity".
- Specific_detectivity sameAs Détectivité_spécifique.
- Specific_detectivity sameAs m.0bgkj.
- Specific_detectivity sameAs Q7574980.
- Specific_detectivity sameAs Q7574980.
- Specific_detectivity sameAs Specific_detectivity.
- Specific_detectivity wasDerivedFrom Specific_detectivity?oldid=599956942.
- Specific_detectivity isPrimaryTopicOf Specific_detectivity.