quantum efficiency


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quantum efficiency

A measure of the efficiency of conversion or utilization of light or other radiation. It is given by the proportion of incident photons, of a particular frequency, that are converted by a device into a useful form, such as a permanent record. Photographic emulsions, at best, record only a few photons out of every thousand falling on them. Electronic detectors have a much higher efficiency.

quantum efficiency

[′kwän·təm i‚fish·ən·sē]
(electronics)
The average number of electrons photoelectrically emitted from a photocathode per incident photon of a given wavelength in a phototube.
References in periodicals archive ?
These detectors offer maximum convenience and portability, with high Detective Quantum Efficiency (DQE) and spatial resolution and are available in 1417 inch and 1012 inch (imaging size).
The quantum efficiency of the NIR sensor is > 65% from 1000 nm to 1600 nm.
The pixelfly qe digital, 12-bit CCD camera system features advanced CCD and electronics technology featuring 1392 x 1024 pixel resolution, and a quantum efficiency of up to 65%.
Objective: Photosynthesis performed by plants, algae and photosynthetic bacteria is the biological process that transforms solar energy into chemical energy with high quantum efficiency.
The twelve global-shutter models provide 9 and 12 MP resolutions, up to 42 fps frame rates, more than 70 dB dynamic range and a high quantum efficiency.
An innovative system design, which includes excitation optics and compact semiconductor detector modules with high quantum efficiency, allows for the implementation of more detection channels per laser than conventional flow cytometry systems.

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