Calculates the exponential growth of the least stable spatial frequency in a laser beam, and is the numerical equivalent of the nonlinear phase shift along the laser system's optical axis.

A device used to accelerate the electrons in a free-electron laser by channeling microwave energy into waveguide cavity...

The transfer of energy lost by radiation to the body, relative to the loss of energy per unit of path traveled.

A relationship between two variables so that when plotted on a graph they yield a straight line.

The Kerr effect, named after the physicist John Kerr who first observed it in 1875, is a nonlinear optical phenomenon where...

A linear computation or algorithm performed on a selected series in the form of an input signal that produces a new series...

A device designed to convert linear change in the light state at input to log data at output.

1. A device used to trace out an object and build up an image. One of the most common of these types is video scanning. The...

A device designed to measure linear or rotary motion by detection of the movement of markings on a transparent medium past a...

A time-to-amplitude converter (TAC) is an electronic circuit that converts a time interval between two events into an...

A solid-state video detector consisting of a single row of light-sensitive semiconductor devices, used in linear-array...

A class of optical phenomena that can be viewed only with nearly monochromatic, directional beams of light, such as those...

A device used to accelerate the electrons in a free-electron laser by supplying electrical energy to the electron beam...

A molecular motor refers to a nano-sized device composed of organic molecules or other small-scale components that can...

Chalcogenide refers to a class of compounds containing elements from group 16 of the periodic table, which includes sulfur...

A linear or two-dimensional matrix of individual detector elements, typically used at the focus of an imaging system.

A nonlinear crystal used to modulate a polarized beam of light by means of the Pockels effect. A Pockels cell is used as a...

Generally, a rotatable table with scales marked in degrees. The fiducial marking also may be a vernier scale. The same...

A laser capable of generating light pulses that last only a few femtoseconds. This can be achieved by nonlinear filtering to...

A detector array refers to a collection of individual detector elements arranged in a two-dimensional grid or matrix format....

A CCD camera, or charge-coupled device camera, is a type of digital camera that utilizes a CCD image sensor to capture and...

Multimode straight fiber capable of transporting linearly polarized light with any incident polarization angle, and in which...

Self-phase modulation (SPM) is a nonlinear optical phenomenon that occurs when an intense laser beam passes through a...

The mathematical formula that proves that any linear operator for which the impulse is known can be wholly characterized...

A deliberately nonlinear amplitude modulation that strengthens weak signals and reduces strong signals for transmission.

Exhibiting the characteristic of materials that are electrical insulators or in which an electric field can be sustained...

Mode-locking is a technique used in lasers to produce ultrashort pulses of light with durations on the order of picoseconds,...

The phenomenon that can render an optical resonator the equivalent of a semiconductor flip-flop. A bistable device will...

Particle acceleration refers to the process by which charged particles, such as electrons or protons, gain kinetic energy...

Method of disk rotation used for optical disk drives, in which the spindle motor decreases the speed of the disk's rotation...

Polarization refers to the orientation of oscillations in a transverse wave, such as light waves, radio waves, or other...

Modification of a system to provide for a linear transfer characteristic from an input to an output device. A circuit for...

In a linear stage, any deviation from the desired translation across a flat, straight line.

Means of amplifying optical waves whereby an intense coherent pump wave is made to interact with a nonlinear optical crystal...

A microbubble resonator is a device used in photonics and optical physics for the precise manipulation of light waves. It...

A method of scanning in which a frame transfer device produces a continuous video image of a moving object by means of a...

Fraction of light counter propagating collinear with the incident source. Processes considering backscattering are Raman,...

A device for which the output electric field is linearly proportional to the input electric field, and no new wavelengths or...

Three-photon microscopy is an advanced imaging technique that belongs to the family of multi-photon microscopy methods. It...

Piezoresistance is a phenomenon in materials science and physics where the electrical resistance of a material changes in...

An atmospheric nonlinear process unique to CO2 laser wavelengths, whereby CO2 absorbs 10.6-µm radiation and the CO2...

Mechanical device intended for the translation (rotational and linear) using high precision control from electronically...

Linear optics refers to the study and manipulation of light in a linear and deterministic manner, where the response of...

A nonlinear label-free imaging technique commonly used during surgical procedures for the visualization of collagen fibers...

A free-electron laser (FEL) is a type of laser that generates coherent, high-intensity electromagnetic radiation by using a...

The phenomenon that makes nonlinear the mathematical expression for the electrical polarization of a medium through which...

A linear image sensor is a type of solid-state electronic device used to capture and convert light into electrical signals....

Transformation of an image, such as a change in position or scale, that does not alter the linearity of the original image.

A formulaic description of the linear change of the reciprocal optical dielectric tensor with either stress or strain.

An optical gate typically refers to a device or system that controls the transmission of light, allowing it to pass through...

A law that uses the square of the cosine between the plane of polarization of a beam of plane-polarized light and the plane...

A frequency comb is a precise and regular series of equally spaced spectral lines, or frequencies, that are generated with...

The scanning of a region in a given sequence of slender, straight parallel strips.

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

Pushbroom scanning is a technique used in remote sensing and imaging systems, particularly in satellite and aerial sensors,...

A method of exciting a laser by coupling it directly to another laser.

Phase distortion refers to a change in the phase relationships between different frequency components of a signal. In the...

Nonlinear optics is a branch of optics that studies the optical phenomena that occur when intense light interacts with a...

An infrared light-emitting diode (IR LED) is a semiconductor device that emits infrared light when an electric current...

A microscope that allows examination of a small crystal and conveniently provides linearly polarized object and reference...

In a straight line. When applied to a lens, it indicates that images of straight lines formed by the lens are not distorted.

The measured width of the field of view at any distance.

Mode hopping in the context of lasers refers to a phenomenon where a laser system abruptly switches from one longitudinal...

Optical switching refers to the process of controlling the routing or transmission of optical signals within a network using...

The effect by which sufficiently small particles will scatter blue light at right angles to the incident beam. This...

See plane-polarized light; polarization.

Line scan refers to a method of capturing images or data by scanning a single line at a time, as opposed to capturing the...

The signal formed when two signals, such as light waves, of different frequencies are present simultaneously in a nonlinear...

A dispersion-shifted fiber (DSF) refers to a type of optical fiber designed to minimize the effects of chromatic dispersion,...

An interferometric technique for the generation of precision gratings that allows for sequential exposure of small segments...

A light therapy that utilizes nonionizing light sources, including lasers, LEDs, and broadband light, in the visible and...

Straight line travel. This denotes the fact that light travels in a straight line when traveling through a medium with a...

1. The SI unit of length equal to 10-6 m. Also called micron. 2. A screw thread device used to make accurate physical linear...

Phase matching is a crucial concept in the field of optics, particularly in nonlinear optics and the generation of coherent...

A line-scan camera, also known as a line-scan image sensor or linear array camera, is a type of digital camera designed to...

A term for thermoplastic optical materials; that is, those in which the polymer chains remain linear after heating and...

A transducer is a device or component that converts one form of energy into another. It is commonly used in various fields,...

High harmonic generation (HHG) refers to a nonlinear optical process in which intense laser light interacts with a gaseous...

Subsurface linear arrangement of elements of rock that is not mappable; lineation is a one-dimensional characteristic.

Optical materials refer to substances or compounds specifically chosen for their optical properties and used in the...

Two-photon polymerization (TPP) is a technique used in additive manufacturing, specifically in the field of 3D printing. It...

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...

Derivative of the half-tone screen process involving the fabrication of a binary pulse-width modulated copy of the...

The coupling of laser or light beams via nonlinear optical techniques such as four-wave mixing to achieve spatial variation...

See periscopic lens; rapid rectilinear lens.

Direct conversion of a photon from one wavelength to a lower energy photon of another wavelength(s) due to inelastic...

An ultrafast pulsed laser is a type of laser that emits extremely short pulses of light with durations typically on the...

The use of a reflective device, which can be fashioned from a variety of materials including gases, solids, dyes, aerosols,...

Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner...

The first nonlinear theory in plasma physics that details the time and space evolution of plasma wave instability from a...

A lens aberration in which the focal length varies radially outward from the center of the field. It has the effect of...

A spectrograph that uses a diffraction grating as its dispersive element in place of a prism, and yields greater resolving...

A femtosecond laser is a type of laser that emits ultrashort pulses of light with durations on the order of femtoseconds,...

A system having a photoelectric detector for the measurement of three quantities related by linear combination to...

A laser-pumped crystal with nonlinear optical properties inside of an optical resonator in which the output generates...

Harmonic generation refers to a nonlinear optical process in which incoming photons interact with a material and produce new...

Nonlinear optical materials are substances that exhibit optical properties that are not linearly proportional to the...

A double meniscus system in which two achromatized meniscus lenses are arranged symmetrically on either side of the aperture...

Double-clad fiber (DCF) is a specialized optical fiber that features two concentric cladding layers surrounding a core. The...

Second-harmonic generation (SHG) is a nonlinear optical process that occurs when two photons with the same frequency combine...

A reference sphere used to represent all possible states of polarization. All linear polarizations will lie on the equator...

A type of radiation detector designed to recognize nonlinear optical effects, such as the Raman effect, by means of a...

A Ti:sapphire laser is a type of solid-state laser that utilizes a titanium-doped sapphire crystal as the gain medium. The...

The linear relationship between input and output optical fields for a given optical system or application that allows the...

Linear receive optics typically refers to the optical components and systems used in the reception (detection) of linearly...

A positioning drive that rotates a fraction of a 360° turn when the motor coils are activated, resulting in linear or...

A microcomb, short for microresonator frequency comb, is a novel photonic device that generates a precise series of evenly...

A type of pyroelectric detector with favorable qualities of linearity, sensitivity and spectral responsivity used in FTIR...

A support device in which a column or chamber of air permits the free travel of a mobile part. In optical mounting and...

A nonlinear optical process in which the frequency of an optical beam is doubled coherently.

Dichroism refers to the property of certain materials to exhibit different colors or absorbance of light depending on the...

A Kerr soliton refers to a specific type of soliton, a self-reinforcing wave packet, that arises in nonlinear optical...

A micro-ring resonator is a compact optical device that utilizes the resonant behavior of light within a small ring-shaped...

Azimuthal polarization refers to a specific polarization state of light where the electric field vector of the...

A wide-field multiobject spectroscopy system used in astronomy, in which a bundle of low-loss optical fibers positioned on...

A technique for determining the nonlinear optical properties of a sample material by moving the sample through a focused...

A silicon photodiode is a semiconductor device that converts light into an electrical current. It is a type of photodetector...

Monolithic self-scanning linear image sensor array for multichannel spectroscopy with a spectral range of from 200 to 1000...

A device that functions throughout the continuous radiation of a linearly polarized plane wave, and whose nonreciprocity...

An optical crystal that possesses a strong nonlinear dielectric response function to optical radiation. A material with a...

The pattern of lines traced by rectilinear scanning in display systems.

A device using a parametric amplifier inside a resonant optical cavity to generate a frequency-tunable coherent beam of...

A device used to accelerate the electrons in a free-electron laser. There are several types, including the induction linear...

Second-order nonlinear optical properties refer to a class of phenomena exhibited by certain materials in response to...

A Fresnel lens is a type of optical lens that consists of a series of concentric grooves or steps carved into a flat, thin...

Ratio between map or photo linear distance and the actual ground dimensions represented.

Amplifier in which the input and output pulse heights are directly proportional.

The scale for floating hydrometers used to measure the specific gravity of a polishing suspension. The depth of immersion is...

A device for measuring linear dimensions. The optical caliper generally consists of two circularly mounted mirrors whose...

Deep learning is a subset of machine learning that involves the use of artificial neural networks to model and solve complex...

The use of a krypton laser system for the measurement of small molecules aligned by an electric field, by analyzing the...

The smallest linear diameter to which a laser or other beam of radiant energy is capable of being focused, depending on the...

In image processing, methods of reducing image defects that result from false data. Techniques include sampling, linear...

A general term referring to the situation in which an image is not a true-to-scale reproduction of an object. The term also...

An optical system that is corrected for distortion and spherical aberration and therefore forms the image of a straight line...

FMCW lidar stands for frequency-modulated continuous wave lidar. It is a type of lidar (light detection and ranging)...

A type of motor that acts as the control element in a servomechanism. It is powered by an amplifier circuit and drives the...

Supercontinuum refers to a broad spectrum of light that spans a wide range of wavelengths, typically from the visible to the...

High-precision motorized positioning device, often linked to computer control equipment.

A hyperspectral imaging camera is a sophisticated imaging device capable of capturing and processing data across a wide...

It is often necessary to estimate the value of what a pixel would be between neighboring pixels. This is accomplished by...

One class of nonlinear space-invariant transformation processes used for processing convolved and multiplied signals.

The power, expressed in prism diopters, that is the linear displacement, in centimeters, produced by the prism one meter...

An extremely wide emission spectrum generated by the nonlinear effects created when a high peak power from a short-pulse...

Two-photon excited fluorescence (TPEF) is a nonlinear optical method that allows imaging of biological cells and living...

A linear positioning stage, also known as a linear stage or translation stage, is a precision mechanical device used to...

An instrument consisting essentially of a tube 160 mm long, with an objective lens at the distant end and an eyepiece at the...

A strip or annulus of glass coated with a semitransparent material such as inconel. The coating thickness, and as a result...

Technique using functional optical microscope with the addition of a coherent source collinear with the image path. The...

The ratio of the power of the carrier wave to that of unwanted signal distortions, or noise, before any nonlinear signal...

Q-switched operation, or q-switching, is a technique used in lasers to produce short and intense pulses of light. The term...