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holography Dictionary Terms

phase screen
A phase screen, in the context of optics and wave optics, refers to a surface or medium that introduces a phase delay to an incident wavefront passing through it. This concept is often used in the simulation and modeling of optical systems,...
sandwich holography
The simultaneous exposure of two holographic plates with emulsions facing the object. After deformation, a second pair of...
microwave holography
The holographic recording of the pattern formed by two sets of coherent microwaves that interfere at a scanning plane. A...
acoustical holography
The optical reconstruction of image information contained in a sound field. First the diffraction pattern, formed by an...
object beam
In holography, the wave of light that illuminates the object to be recorded, which diffracts it to the recording medium,...
digital holographic microscopy
Digital holographic microscopy (DHM) is an advanced imaging technique that combines holography and digital image processing...
phase
In optics and photonics, "phase" refers to a property of electromagnetic waves, such as light, that describes the position...
color holography
The recording of three or more separate holograms having a different color on a medium, so that illumination with a tricolor...
venetian-blind effect
Short-distance scattering of light in holography caused by random index inhomogeneities and the developing index that...
holographic tomography
Holographic tomography is an advanced imaging technique that combines holography and tomography to provide three-dimensional...
computer polarization holography
A technique used to store wavefront information on thin polarization information-recordable materials by controlling the...
pulsed sandwich holography
Separation of incident laser pulses by several seconds so holographic plates can be changed and sandwiched between the...
electroholography
A technology that uses electrically activated holograms stored within specially developed crystals to route information in...
helium-neon laser
A helium-neon (HeNe) laser is a type of gas laser that emits visible red light at a wavelength of 632.8 nm. It operates...
holographic grating
A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...
near-field holography
A lithography method that allows the transfer of fine-pitch gratings from a phase mask into photoresist. The exposure takes...
quantitative phase imaging
Quantitative phase imaging (QPI) is an advanced imaging technique used in microscopy to measure and analyze the optical...
phase mask
In optics and photolithography, a phase mask refers to a device that modifies the phase of light waves passing through it....
liquid-surface holography
The acoustical holographic process in which the hologram consists of slight elevations in a liquid surface, in the areas of...
holography
Holography is a technique used to capture and reconstruct three-dimensional images using the principles of interference and...
image plane holography
A hologram in which the image of an object, or the object itself, is located near the hologram recording plane, for optimum...
frequency summing
A technique used in holography that involves the mixing of lasers of different wavelengths to produce a beam of shorter...
photoelectron holography
A technique proposed for studying the atomic structure of crystals by measuring the interference pattern generated when the...
electron speckle pattern interferometry
A method for detecting vibration amplitudes analogous to image holography, except that the film emulsion is replaced by a...
liquid crystal light valve
A liquid crystal light valve (LCLV), also known as a spatial light modulator (SLM), is an optical device that modulates the...
metasurfaces
Metasurfaces are two-dimensional arrays of subwavelength-scale artificial structures, often referred to as meta-atoms or...
diffractive optics
Optical elements that use diffraction to control wavefronts. Diffractive optical elements include diffraction gratings,...
holographic camera
A holographic camera, also known as a holographic imaging system or holographic recorder, is a specialized device used to...
time-averaged holography
Although low in sensitivity (approximately 10-7 m for helium-neon lasers), this holographic technique permits quantitative...
double-pulsed holography
Holographic recording whereby the object is illuminated by two pulses, separated by a time interval, from a Q-switched laser...
lensless microscopy
Lensless microscopy, also known as computational or holographic microscopy, is an imaging technique that captures and...
in-line holography
The formation of a hologram by single reference-beam interferences with waves that are diffracted or scattered from a small...
optical data storage
The storage of information via optical means, primarily employing a low-power laser to inscribe data on a photosensitive...
high-speed holography
The holographic recording of sequences of high-speed phenomena. With a multiple beam laser, multiple holograms that depict...
incoherent holography
The production of holograms initially from either conventional photographs or incoherent optical equipment.
spatial light modulator
A spatial light modulator (SLM) is an optical device that modulates or manipulates the amplitude, phase, or polarization of...
bismuth silicon oxide
A photorefractive material used in image processing, holography and optical switching.
sonoholography
double-exposure holography
The formation of an interferogram by means of two holograms on the same recording medium, often used for determining small...
reference beam
In holography, the beam of light that is directed from the beamsplitter to the recording medium, where it interferes with...
ultrasonic holography

(41 results found)
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