28 terms
Photonics Dictionary: M
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mass relievingThe removal of material from an optical system to decrease the weight and sometimes the bulk of the system. See coring; egg-crating.
mass spectrographA device that uses electromagnetic fields to separate electrically charged particles according to their masses. As a beam of charged particles is passed through a mass spectrograph, the result is a...
mass spectrometerA device used to measure the masses and relative concentrations of atoms and molecules. It utilizes the Lorentz force generated by external magnetic field on a moving charged particle, in which the...
mass spectrometryAn instrumental technique that utilizes the mass-to-charge ratio of charged particles as recorded from a mass spectrometer in order to determine the mass of a particle as well as the chemical makeup,...
mass spectroscopeAn instrument that uses electromagnetic fields to sort out the relative masses of atoms and molecules.The same way an optical spectroscope uses a prism to separate light into its various wavelengths,...
mass spectrumA spectrum that displays the distribution in mass or in mass-to-charge ratio of ionized atoms, molecules or molecular parts. Mass spectrums are typically recorded by instruments utilized in mass...
massive opticsOptical components exceeding 24 in. in diameter. The components are usually glass, acrylic or polystyrene and are used for virtual image systems in simulators and collimators.
mmeter;mass;milli- m is the standard unit symbol for length in the International System of Units (SI). 1 meter is equivalent to 3.28 feet. m is also the standard symbol for mass; m is also the standard SI metric unit prefix milli- which represents one thousandth i.e. 10-3, of a given unit.
mAsmilliamperes-second - unit measure of electric charge acquired when multiplying the electric current in milliamperes (one thousandth or 10-3 of the standard unit for electric current the ampere) by the time in seconds. It is commonly used to describe the length of time that electrons are produced or passed through a given circuitry.
masermicrowave amplification by stimulated emission of radiation
maserAn acronym for microwave amplification by stimulated emission of radiation. Predecessor to the laser, the maser or 'microwave laser' was the first device to produce coherent electromagnetic waves,...
mask1. A framelike structure that serves to restrict the viewing area of the screen when placed before a television picture tube.
2. In photolithography, a photomask (or mask) is typically a patterned...
mask proximity correctionA technique used in photolithography of computer chips to compensate for errors caused by the proximity effect, which results in variations in size between areas of the mask that have many small...
mask spectrometerInstrument that uses absorption spectroscopy to detect gases in planetary atmospheres. Dispersed incoming radiation is transmitted to one or more sampling elements, or masks, before reaching the...
maskingIn image processing, the assigning of certain portions (or pixels) of an image a constant value of either 0 (black) or 1 (white) as to restrict image processing operations to a specific set of pixels...
masks for evaporation/depositionIn the context of thin film deposition processes such as evaporation or sputtering, masks are used to selectively deposit material onto substrates, creating patterns or structures with precise...
master oscillation -> injection seedingThe use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a large pulsed Nd:YAG host laser, providing improved bandwidth and temporal...
matrix-assisted laser desorption/ionizationProcess of analysis in which the analyte substance is distributed in a matrix before laser desorption. This method avoids the mass limitations associated with laser desorption and possibly enhances...
metrologyMetrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and...
microapertureA small opening or slit in a mask.
microprobeAn instrument that produces an intense, tightly focused beam of ions to stimulate emissions from a minute section of a sample undergoing spectroscopic analysis. The ion beams found in microprobes are...
MMUmass memory unit
MOmaster oscillation; magneto-optic
modulated grating hologramA computer-generated, phase-and-amplitude, off-axis hologram made by a multi-exposure technique that uses three computer generated transmission masks. Each mask controls one fixed-phase component of...
molded lensA molded lens is an optical lens manufactured using a molding process, typically involving the shaping of a material, such as glass or plastic, into the desired lens shape. This process involves...
MOPAmaster oscillator power amplifier
MSCPmass storage control protocol
MTBHmass-transport buried heterostructure
Photonics DictionaryM