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Alluxa - Optical Coatings LB 8/23
photocathode Dictionary Terms

semitransparent photocathode
A photocathode that receives radiation from one side and emits a photoelectric current from the opposite side.
signal-induced noise
Noise generated in the flow of current in the photomultiplier, produced by the intentional or controlled application of...
snooperscope
An instrument used for viewing in low levels of illumination by means of infrared radiation. A high-aperture lens forms an...
dark noise
The noise produced in a photodetector when the photocathode is shielded from all external optical radiation and operating...
photomultiplier tube
A photomultiplier tube (PMT) is a highly sensitive vacuum tube that detects and amplifies low levels of light. It is widely...
wafer tube
An image intensifier tube in which the photocathode and the output of the microchannel plate are proximity-focused on the...
infrared image tube
An image converter that produces a visible image based on the infrared emittance of the object. The infrared energy is...
x-ray streak camera
A diagnostic instrument that uses a photocathode design to see a broad range of x-ray radiation by streaking the...
negative-electron-affinity photocathode
A photocathode having a P-type semiconductor with a work function less than its bandgap. The photocathode can release a...
image iconoscope
A camera tube similar in design to the iconoscope. However, the image formed in the image iconoscope is projected on a...
electrostatic image dissector
A nonmagnetic instrument utilizing an electrofocus and deflection tube with a photocathode for imaging purposes. The optical...
channel electron multiplier
A photoelectric detector consisting of a glass tube internally coated with a low conductance material. Voltage applied along...
photocathode luminous sensitivity
The responsivity of a photocathode to luminous energy equal to the ratio of the photoelectric emission to the incident...
fluorescent screen
A fluorescent screen refers to a phosphorescent or fluorescent-coated surface that emits visible light when exposed to other...
image intensifier
An image intensifier, also known as an image intensification tube or image intensification device, is a specialized...
cathode radiant sensitivity
Cathode radiant sensitivity refers to the ability of a photocathode to convert incident radiant energy, typically in the...
microchannel spatial light modulator
A device to modulate spatially a collimated coherent beam of light with input data in optical data processing. It uses a...
kron camera
Astronomical detector consisting of a photocathode isolated from the target by a coin value from which electrons are focused...
intensified charge-coupled device camera
An intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an...
cesium-antimonide photocathode
A photocathode that exhibits maximum sensitivity in the blue and ultraviolet regions of the spectrum. The sensitivity is...
phototube
An electron tube having a photocathode for the emission of a photoelectric current.
proximity-focused image tube
A planar photocathode and a planar phosphor screen mounted in a close-spaced parallel configuration in an evacuated...
image amplifier
An electro-optic system using, in general form, an evacuated glass envelope with a semitransparent photocathode at one end...
magnetically focused image tube
A vacuum tube in which a magnetic field is superimposed onto the tube's electrical field. When the two fields are aligned,...
traveling wave phototube
A traveling wave tube (TWT) containing a photocathode and window that, receiving a laser beam, produces a modified...
x-ray image intensifier
An image intensifier that consists of an evacuated tube with a large input phosphor screen at one end. The phosphor screen...
image orthicon
A camera tube widely used in television broadcasting. It consists of three sections within a single vacuum envelope. 1. A...
photocathode
An electrode used to release photoelectric emission when irradiated, making it then the irradiated negative electrode of a...
multianode microchannel array detector
A photon-counting instrument for use in both space-borne and ground-based photometric and spectroscopic instrumentation....

(29 results found)

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