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 ?
The new, third generation Aptina A-Pix enhances quantum efficiency and minimizes cross talk to capture sharp images with vibrant colors even in the low-light conditions that challenge traditional sensors.
Through the use of this novel technique, Universal Display intends to double the outcoupling efficiency, resulting in an external quantum efficiency of about 50%.
It incorporates fully integrated colour filters and webbed microlenses for high quantum efficiency and wide viewing angles.
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.
With its proprietary technology, Anrad is known for producing plates with very high Detector Quantum Efficiency (DQE), fast acquisition and reading rates, extremely low noise electronics, and ghost-free operation, enabling superior image quality and high patient throughput.
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%.
With high Quantum Efficiency and 10-electron read noise, the imager is ideal for JPL's latest state-of-the-art scientific application which requires flexibility in addressing rows in the imager.
Objective: Photosynthesis performed by plants, algae and photosynthetic bacteria is the biological process that transforms solar energy into chemical energy with high quantum efficiency.
This will include significant improvements in internal and external quantum efficiency, better phosphors (especially for warm light and better color rendering), and incremental improvements in light extraction and packaging.
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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