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Abbreviations/Acronyms: M

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m
meter;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.
M
mega;magnification -SI metric unit prefix which represents one million, 106, also the standard symbol for the magnification of a given optical system.
mA
milliampere (or milliamp in English) which represents one thousandth, i.e. 10-3, of the SI unit for electric current that is the ampere (also commonly referred to as amp).
Maldi
matrix-assisted laser desorption ionization
MAN
metropolitan area network
MAP
Manufacturing Automation Protocol; measurement assurance program
MAR
malfunction array radar
MARS
magnetic array system
mAs
milliamperes-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.
maser
microwave amplification by stimulated emission of radiation
MAU
media access unit — A media access unit (MAU) is a unique device utilized to connect token ring devices from multiple network stations into a star topology. There are two types of MAUs, passive and active. Passive MAUs are powered from their network connections while active MAUs are powered electrically from an external source.
max
maximum
Mb
megabit — The megabit (also expressed as Mbit) is equivalent to one million (or 106) of the standard unit for digital information storage in telecommunications which is the bit.
MB
megabyte — The megabyte (also expressed as Mbyte) is equivalent to one million (106) of the standard unit for digital information storage in computing which is the byte.
MB/s
megabytes per second — The megabyte per second (not to be mixed up with the Mb/s -- megabits per second) is a unit of data transfer rate equivalent to one million (106) bytes per second over a given information network.
Mb/s
megabits per second — The megabit per second (not to be mixed up with the mbit/s – millibit per second, or Mbitps- megabit picosecond) is a unit of data transfer rate equivalent to one million (or 106) bits per second over a given information network.
MBE
molecular beam epitaxy — A well-controlled thin film technique for growing films with good crystal structure in ultra high vacuum environments at very low deposition rates. MBE is also commonly used in the manufacture of semiconductor devices and solar cells.
Mc
megacycles
Mc/s
megacycles per second — Megacyces per second is an oscillation rate equivalent to one million (or 106) of the standard unit of a single optical period over a second which is an optical cycle.
MCA
microchannel analyzer
mcd
millicandela — The millicandela is equivalent to one thousandth (or 10-3) of the standard unit of luminous intensity that is the candela, which is the power emitted by a given light source in a particular direction.
MCF
mutual coherence function — The mutual coherence function is a complex quantity that is the time-averaged value of the cross correlation function of a light field at two points within an aperture with a time delay that relates the path difference to the point of observation of the interference fringes. The mutual coherence function is the key function in coherence theory and the study of partially coherent light.
MCM
modulation contrast microscopy; multichip module — modulation contrast microscopy is a unique illumination technique that enhances contrast in an imaging microscope by converting optical gradients into variations in light intensity. Modulation contrast microscopy is found most commonly in live cell imaging, polarization microscopy, phase contrast, and oblique illumination of stained, unstained and birefringent specimens. A multichip module is an electronic packaging system where multiple discrete electronic components (integrated circuits, semiconductor diodes, etc.) are packaged in various ways onto a single substrate.
MCP
microchannel plate
Mcps
megacycles per second
MCT
mercury cadmium telluride — Mercury cadmium teluride (HgCdTe) is a specific alloy combination that allows one to obtain any optical absorption bandgap of the material between 0 and 1.5 electron volts (eV) making it completely transparent at photon energies and wavelengths below the energy gap in the infrared.
MCVD
modified chemical vapor deposition
MCZ
magnetic Czochralski process — Introduction of an external magnetic field in the Czochralski melting process for crystal growth in order to influence the flow and dampen the amplitudes of the melt oscillations that occur in the process. This is accomplished when the external magnetic field generates an electric field inside the melt, which further induces an internal magnetic field in the now electrically conducting melt. The amplitudes of the now induced electric and magnetic fields can be controlled by the strength of the external magnetic field allowing control of the MCZ process.
MDL
minimum detection limit (MDL) — In chemistry, the minimum detection limit is the lowest concentration of a chemical substance that can be discerned from the absence of that substance.
MDM
metal-dielectric multilayer (MDM) — Periodic nanofilm structures for optical mode confinement and tunneling of resonant surface plasmons.
med
medium
MEL
many-element laser; maximum excess loss (MEL) — the many element laser is a laser unit that consists of N like elements of active materials for support with the mode selection of the laser output. The mode selection properties of a many element laser have been experimentally exploited with as many as 10 like elements. Maximum excess loss is the maximum power lost within a give system (typically a fiber optic communication system) including scattering, dispersion, absorption and coupling loss.
MEMS
microelectromechanical systems
MERA
molecular electronics for radar applications
MeV
mega-electronvolt — A unit of energy that is equivalent to one million (106) of the unit of energy which is the electron volt (eV).
meV
milli-electronvolt — A unit of energy that is equivalent to one thousandth (10-3) of the unit of energy which is the electron volt (eV).
mF
millifarad — A unit of capacitance that is equivalent to one thousandth (10-3) of the standard unit for capacitance which is the farad.
MF
medium frequency
MFD
mode-field diameter
MFSK
multiple frequency shift keying
mg
milligram
mh
millihenry
MHD
magnetohydrodynamics
MHW
multihundred-watt
MHz
megahertz
MI
machine intelligence
MIL-SPEC
Also referred to as military standard (MIL-STD),  a military specification is a defense specification or standard utilized by the United States and established by the U.S. department of defense to achieve standardization and regulation of defense related products and objectives.
MIL-STD
U.S. military standard. See MIL-SPEC.
MIM
metal-insulator-metal
MIMD
multiple-instruction/multiple-data

Photonics DictionaryAbbreviations/AcronymsM

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