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18 terms
Photonics Dictionary
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e-beam x
e-beam
electron beam
double-beam CRT
A cathode-ray tube that either splits an electron beam from one source or uses beams from two sources to produce two beams, each of which can produce separate traces, but which can overlap.
double-beam spectrophotometer
A spectrophotometer in which the beam emitted by the radiation source is split into beams that travel through the sample and a reference cell and are subsequently recombined to fall on the detector....
multiple-beam laser
A laser having a Q-switching method that allows separate parallel volumes of the lasing material to act independently of each other and produce several separate beams. It is useful in high-speed...
single-beam gradient trap
->
laser tweezers
A technique based on the principles of laser trapping and used to manipulate the position of small particles by gradually changing the position of the laser beam or beams once the particles are...
electron beam
A stream of electrons emitted by a single source that move in the same direction and at the same speed.
electron gun
->
electron-beam gun
1. A device generally used in a cathode-ray or camera tube to emit a stream of electrons moving at uniform velocity in a straight line. It consists of an emitting cathode and an anode, with an...
electron-beam drilling
The use of a tightly focused beam of electrons to drill minute holes in substances. The drilling is accomplished by the evaporation of the material in the desired circumference by the intense heat of...
electron-beam evaporation
A method of thin-film deposition in which electrons boiled off a heated cathode are used to melt the coating material. If a multipocket crucible is used, many materials can be processed at the same...
electron-beam film scanning
The method by which photographic film is scanned by an electron beam. One technique uses the uniform light of a television screen, focused by a lens onto the processed film, as a means of creating a...
electron-beam gun
1. A device generally used in a cathode-ray or camera tube to emit a stream of electrons moving at uniform velocity in a straight line. It consists of an emitting cathode and an anode, with an...
electron-beam recording
The recording of the information contained in a modulated electron beam onto photographic or silicon resin-coated materials. A direct recording method involves the passage of the recording medium...
electron-gun system
An electron-gun system is an assembly used to generate and control a focused beam of electrons. Electron guns find applications in various fields, including cathode ray tubes (CRTs), electron...
Fabry-Perot interferometer
A multiple-beam interferometer, usually consisting of two flat plates, with high reflective ability. The plates are set parallel to one another by spacers so that lightwaves may bounce back and forth...
Fizeau interferometer
A type of interferometer noted for producing narrow multiple-beam interference fringes. As a result, when compared with the Twyman-Green, the Fizeau interferometer has fewer optical components, does...
in-line holography
The formation of a hologram by single reference-beam interferences with waves that are diffracted or scattered from a small object.
laser tweezers
A technique based on the principles of laser trapping and used to manipulate the position of small particles by gradually changing the position of the laser beam or beams once the particles are...
Lummer-Gehrcke plate
A high-resolution spectroscopic device commonly used in the early 20th century as a component of double-beam interferometers. Light introduced at one end of the plane-parallel glass plate will be...
Photonics Dictionary
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