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Edmund Optics - Manufacturing Services 8/24HP

8,726 terms

Photonics Dictionary

mode filter

A device used in measuring the attenuation of multimode optical fibers. A short reference length of fiber when combined with the mode filter has approximately the same angular output distribution of...

mode hopping

Mode hopping in the context of lasers refers to a phenomenon where a laser system abruptly switches from one longitudinal mode to another. In a laser, different longitudinal modes represent distinct...

mode interference noise

A condition causing variation in output power that is eliminated by mode locking.

mode locking

Mode locking is a technique used in optics and laser physics to generate short pulses of light with extremely high peak powers. In mode locking, the phases of different longitudinal modes (specific...

mode partitioning

The pulse-to-pulse fluctuations in power distribution among modes of a Fabry-Perot laser, which can result in system-limiting noise.

mode scrambler

A device for inducing mode coupling in an optical fiber. Also, a device composed of one or more optical fibers in which strong mode coupling occurs. Also called mode mixer.

mode selectivity

A multimode laser characteristic defined as the ratio of power loss for the second mode to that of the lowest mode.

mode sweeping

A form of laser output noise that is caused by thermal, mechanical, or acoustical disturbances of the cavity length. Mode sweeping occurs when the length of the laser cavity changes as a result of...

mode volume

The number of bound modes that an optical waveguide is capable of supporting.

mode-locked lasers

Mode-locking is a technique used in lasers to produce ultrashort pulses of light with durations on the order of picoseconds, femtoseconds, or even attoseconds. This method synchronizes the phases of...

modem

Modulator/demodulator. An electronic device that modulates and demodulates signals transmitted over communications lines.

modem

modulator-demodulator

modified chemical vapor deposition

Modified chemical vapor deposition (MCVD) is a technique used in the fabrication of optical fibers. It is a specialized form of chemical vapor deposition (CVD) that is employed to produce...

modulated grating hologram

A 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...

modulated transfer function

The modulated transfer function (MTF) is a measure used in optical engineering and imaging science to describe the ability of an optical system to transfer the contrast of an object to an image. It...

modulated transmission ellipsometry

A method used to detect internal or residual microstresses in a material by using a laser beam to locate changes in polarization caused by the stress.

modulated zone plate

A zone plate produced by a computer and having a binary structure that can be etched into a chromium or quartz layer. It often is used in laser machining, in which the machining of small holes with...

modulation

In general, changes in one oscillation signal caused by another, such as amplitude or frequency modulation in radio which can be done mechanically or intrinsically with another signal. In optics the...

modulation bandwidth

The highest frequency at which a laser diode can be driven and still be modulated acceptably that further results in the maximum rate of change (modulation) in output frequency that can be obtained...

modulation frequency

Rate at which optical radiation or a signal is varied through the use of a mechanical or electronic chopper. Also called chopping frequency.

modulation spectroscopy

A method of spectral analysis in which some property of the sample is varied and the corresponding change is measured. The change is induced by a repetitive perturbation such as an electric field,...

modulation transfer function analysis/measurement equipment

MTF analysis/measurement equipment refers to instruments and tools used to measure and analyze the modulation transfer function (MTF) of optical systems. The MTF is a quantitative measure of the...

modulation transfer function

Also called sine wave response and contrast transfer function. The modulation transfer function is the ratio of the modulation in the image to the modulation in the object as a function of frequency...

modulator

A modulator is a device or component that modifies a carrier signal in order to encode information for transmission over a communication channel. The process of modulating involves varying one or...

modulator crystal

A nonlinear crystal used to modulate a polarized beam of light by means of the Pockels effect. A Pockels cell is used as a voltage-controlled waveplate by means of applying a known voltage across the...

MOEMS

micro-optoelectromechanical systems

MOG

micro-optic gyroscope

MOGA

microwave and optical generation and amplification

Mohs hardness

Material hardness scale that is used to characterize the scratch resistance of various materials. This surface hardness evaluation is determined by scratching the surface to be tested with 10...

moiré deflectometry

An optical interference technique widely utilized as a method of nondestructive testing when determining the ray deflection and the modulation transfer function (MTF) of an optical system associated...

moiré pattern

The resulting interference pattern generated from moiré deflectometry, the moiré pattern is a pattern developed from interference or light blocking, when gratings, screens or regularly...

moiré topography

Contour mapping technique that involves positioning a grating close to an object and observing its shadow on the object through the grating. The resultant moiré fringes correspond to a contour line...

MOKE

magneto-optic Kerr rotation

mol

mole

mol/l

moles per liter

MOLA

Mars Observer Laser Altimeter

molded blank

A blank whose basic surface curves are attained by heating and forming a given weight of raw glass; a rough glass blank resembling the finished lens in size and shape. After molding, a precision lens...

molded lens

A 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...

molecular beam epitaxy -> epitaxy

A well controlled thin films technique for growing films with good crystal structure in ultra high vacuum environments at very low deposition rates. Epitaxy methods are well known for the growing of...

molecular modeling

A method of predicting the nonlinear optical effects exhibited by different molecules without synthesizing the molecules themselves.

molecular motor

A molecular motor refers to a nano-sized device composed of organic molecules or other small-scale components that can convert light energy into mechanical motion at the molecular level. These...

molecular spectroscopy

Spectrum analysis concerned with the spectra formed by transitions in molecules.

Mollier diagram

Graphic evaluation of the operation of a steam thermodynamic cycle of a solar energy system on which enthalpy is plotted against entropy.

molybdenum diselenide

Molybdenum diselenide (MoSe2) is a dichalcogenide compound composed of molybdenum (Mo) and selenium (Se). It belongs to the family of transition metal dichalcogenides (TMDs), which have garnered...

MOMBE

metallorganic molecular beam epitaxy

momentum transfer

In physics, momentum transfer is the amount of momentum transferred from one particle to another during particle collision or interaction. This phenomenon can be utilized in various areas of physics...

monitor current

In a laser diode, the photocurrent produced by a photodiode that detects the emission from the rear facet of the semiconductor chip. It can be used to provide feedback control of the forward current...

monochromatic

Composed of one color; having only one wavelength of radiation.

monochromatic filter

A filter that transmits a single spectral line emitted by a line source.

monochromatic illuminator -> monochromator

A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of light. The term monochromator is derived from "monochromatic," meaning...

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Photonics Dictionary

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