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Opto Diode Corp. - Detector Spotlight 10-24 MR

Sheetak - Cooling at your Fingertip 11/24 HP

8,726 terms

Photonics Dictionary

magenta

The reddish/purple color that results when equal amounts of blue and red are combined so that no one wavelength dominates.

magnesium fluoride

A colorless, crystalline compound whose low refractive index (n = 1.38) makes it effective as a lens antireflection coating when deposited by thermal evaporation in a near vacuum. This process...

magnetic bremsstrahlung -> synchrotron radiation

Radiation emitted by electrons when they travel in circular orbits at speeds close to that of light. Synchrotron radiation occurs in the x-ray and ultraviolet regions of the spectrum. Once considered...

magnetic bubble film

An amorphous film in which cylindrical bubbles of reverse magnetization can be formed to follow circuit paths usually made by depositing magnetic metal strips on the film surface. It is used in...

magnetic disc

A plastic disc coated with ferric oxide or other films on which data can be stored by selectively magnetizing areas of the surface.

magnetic enhancement

Plasma-enriched deposition or planar magnetic sputtering that offers increased deposition rates in optical thin-film production. This technology surpasses conventional and RF sputtering.

magnetic fluid

A fluid having three components: a carrier fluid, magnetite particles suspended by Brownian motion and a stabilizer to prevent agglomeration of these fine particles. A magnetic fluid is characterized...

magnetic force microscope

A variation of the atomic force microscope that operates by scanning a tiny ferromagnetic probe (or a magnetized tip) over a magnetic sample, and detecting the extremely small forces exerted on the...

magnetic lens

An arranged series of coils, magnets or electromagnets disposed in such a way that the resulting magnetic fields generate a Lorentz force that is used to then focus or deflect beams of rapidly moving...

magnetic permeability -> permeability

Typically represented by the Greek letter μ, magnetic permeability is the measure of a material's ability to generate and sustain a magnetic field within itself when an external magnetic field is...

magnetic resonance imaging

An imaging technique used in radiology that is based on the principles of nuclear magnetic resonance (NMR) to produce high-quality images of the inside of the human body by imaging the nuclei of...

magnetic resonance spectroscopy

A method of studying the chemical and physical properties of atoms and molecules (typically living tissue and chemical samples) by exploiting the magnetic properties of their atomic nuclei when an...

magnetic rotation spectroscopy

Technique in which the polarization rotation of light, and its relationship to the magnetic field strength can be analyzed and related to various experimental parameters when passed through a...

magnetic rotation spectrum

The absorption spectrum of an element influenced by a magnetic field in the same direction as the transmitted light, which is then exposed to the Faraday effect.

magnetic spectrograph

An electron system using the effect of a constant magnetic field on electron paths to differentiate electrons that have varying velocities for the accurate measurement of the energies and intensities...

magnetic tape recorder

An instrument used to record sound, pictures or both on a magnetic tape for storage and playback.

magnetic vector

A term denoting the magnitude and direction of the magnetic field associated with an electromagnetic wave when describing light in its vector form.

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, electrons from the photocathode are accelerated through the tube in a spiral...

magneto-optic parameter

A complicated constant linked with the electron theory of the Faraday and Kerr effect. It demonstrates a specific value for each metal.

magneto-optic readout device

A device using the Kerr effect to read back the signals from mechanically recorded tapes and discs. It consists of a light source, optical lenses to focus and direct the light beam, a pair of...

magneto-optic shutter

A type of high-speed photographic shutter that uses Faraday rotation to produce exposure times as fast as 1 microsecond. It consists of two polarizers, set with their planes of polarization at right...

magneto-optic storage

A specific type of storage in which the material to be written on is heated above its transition temperature and switched in a biased field. Reading of the material is determined by the magneto-optic...

magneto-optical photonic crystal

A photonic crystal that comprises magneto-optical material such that the optical response of the device depends on the magnetization of the magneto-optical material. The magneto-optical effect can be...

magneto-optics

Magneto-optics refers to the study and manipulation of the interaction between magnetic fields and light (electromagnetic radiation). This field of physics explores how the properties of light, such...

magnetometer

A magnetometer is a scientific instrument used to measure the strength and/or direction of a magnetic field. It can detect and quantify the intensity of magnetic fields in its vicinity. Magnetometers...

magnetorheological finishing

Magnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces to achieve extremely high levels of smoothness and accuracy. It is...

magnetorheological

Magnetorheological (MR) materials, often referred to as MR fluids, are smart materials that undergo significant changes in their rheological behavior (flow and deformation characteristics) in the...

magnetron sputtering

A variation from standard physical vapor deposition (PVD) coating techniques, magnetron sputtering is a plasma coating process that utilizes magnetic fields to contain the plasma in front of the...

magnification

The ratio of the size of the image of an object to that of the object. The ratio of the linear size of the image to that of the object is lateral magnification. Angular magnification is the ratio of...

magnifier

A lens or lens system that produces an enlarged virtual image of an object placed near its front focal point.

magnifying power

The ability of an optical system to make an object appear larger. An optical element or optical system causing an object to appear twice as high and twice as wide is said to have a magnification of...

magnitude

In astronomy, the relative brightness of a celestial body. Originally a scale from 1 to 6, where 1 represented the brightest and 6 the faintest visible night sky objects. This scale has been expanded...

magnon

A magnon is a quasiparticle representing a quantized spin wave in a magnetic material. In other words, it is a collective excitation of the spins of electrons in a magnetic solid, analogous to the...

major

A blank to which a piece of glass of a different refractive index will be fused to form a multifocal lens.

major lobe

With respect to a beam, the radiation lobe having the direction of maximum radiation.

Maksutov corrector

A thick meniscus lens arranged concentric with the center of curvature of a spherical mirror to produce an image free of spherical aberration.

Maksutov objective

A catadioptric lens assembly consisting of a Maksutov corrector and a spherical primary mirror.

Maldi

matrix-assisted laser desorption ionization

Malus's law

A law that uses the square of the cosine between the plane of polarization of a beam of plane-polarized light and the plane of polarization of a polarizing element to calculate the intensity of the...

MAN

metropolitan area network

mandrel

A shaft, spindle or any object generally passed through a workpiece to hold, support or shape a particular piece during its machining process or its practical use. In fiber optics, optical fibers are...

mandrel wrap test

A means of testing optical fiber for macrobending losses by wrapping the fiber once at very low tension around a mandrel, and then measuring attenuation vs. wavelength.

Mangin mirror

A double-surfaced catadioptric spherical mirror whose spherical first surface consists of a negative meniscus (concave) lens and second rear surface is a spherical mirror. This combination utilizes...

manometer

A device used to measure the pressure of gases and vapors, without regard to atmospheric pressure.

Manufacturing Automation Protocol

A computerized token-passing local area network (LAN) configuration adopted by General Motors for real time control over the mediation of interconnected devices from multiple manufacturers over the...

MAP

Manufacturing Automation Protocol; measurement assurance program

mapping function

In image processing, the mathematical relationships that link pixel brightnesses of input images to those of output images in point processes. Mapping functions are commonly used to apply...

MAR

malfunction array radar

marcuse loss theory

A theoretical analysis of radiation loss from planar optical waveguides due to scattering by surface irregularities/surface roughness of the walls of the waveguide.

marginal error

The distortion in an ophthalmic lens resulting from the refraction of light rays entering the periphery of the lens surface. It increases relative to the power of the lens.

Photonics Dictionary

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