The dark absorption lines observed in the spectrum of the photosphere of the sun. There are thousands of these lines, the most prominent of which were observed and named by Fraunhofer early in the 19th century.

The optically pumped, solid-state laser that uses sapphire as the host lattice and chromium as the active ion. The emission...

An instrument designed to produce an x-ray spectrum of a material as an aid in identifying it. This technique is...

The electrical arc formed between metal rods that emits the spectrum of the metal itself. Commonly used in the chemical...

An instrument for determining the temperature of a hot object by examining the color spectrum of the visible light it gives...

Hyperspectral resolution refers to the level of detail or granularity in the spectral information captured by a...

An optical clock is a highly precise and advanced timekeeping device that relies on the oscillations of electromagnetic...

Broadband dielectric mirrors, also known as broadband mirrors, are optical coatings designed to efficiently reflect or...

An infrared camera, also known as a thermal imaging camera or IR camera, is a device that captures and visualizes the...

A light source that produces an equal-energy spectrum.

The frequency domain is a concept used in signal processing and analysis to represent signals and data in terms of their...

Reflectance spectroscopy is a technique used to analyze the reflective properties of materials across various wavelengths of...

Nd:YAG laser refers to a solid-state laser that utilizes neodymium-doped yttrium aluminum garnet (Nd:Y3Al5O12) as the gain...

Fraction absorption over a specified range of wavelengths.

A spectrum band that is usually found in the visible or the ultraviolet because of the electron transitions taking place...

An emission spectrum is a graphical representation or a characteristic pattern of the wavelengths or frequencies of light...

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

A gas maser that is capable of producing radiation in the far-infrared region of the spectrum.

A mid-infrared camera is a type of imaging device designed to capture images in the mid-infrared (mid-IR) spectral range,...

Broadening of a spectrum that results from the influence of a magnetic field.

An excimer laser is a type of ultraviolet laser that emits short pulses of light in the ultraviolet spectrum. The term...

A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of...

The absorption spectrum of an element influenced by a magnetic field in the same direction as the transmitted light, which...

The spectrum formed by a dispersing prism or a dispersing prism system.

A noncrystalline, inorganic mixture of various metallic oxides fused by heating with glassifiers such as silica, or boric or...

The region of the electromagnetic spectrum from 320 to 400 nm.

An array of lines in the infrared region of the emission spectrum of atomic hydrogen. Their wave numbers are expressed by...

A wave in the electromagnetic spectrum that has both electrical and magnetic field vectors in the direction of propagation.

Having properties resembling those of light- waves; e.g., the propagation of waves in the television spectrum.

Radiation from the invisible (usually ultraviolet) region of the spectrum.

An InGaAs (indium gallium arsenide) camera is a type of imaging device that utilizes InGaAs sensors to capture images in the...

The frequency space between consecutive transmission peaks in the transmission spectrum of a Fabry-Perot interferometer or...

The region of the electromagnetic spectrum from 280 to 320 nm.

Attosecond photonics sources refer to devices or systems that generate extremely short pulses of light on the order of...

Sapphire crystal refers to a transparent, single-crystal form of aluminum oxide (Al2O3) known as corundum. It is one of the...

A measure of the dispersive properties of a glass. The relative dispersion is defined as: where C, D, and F refer to the...

The direct computation of the Fourier transform of the space variant system output of an optical processor with a single...

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

1. A piece of glass with plane parallel surfaces used to admit light into an optical system and to exclude dirt and...

Indium phosphide (InP) is a compound semiconductor material composed of indium (In) and phosphorus (P). It belongs to the...

A system that applies a crystal as a diffracting agent to photograph the spectrum.

A spectrum formed by radiation whose energy values of the property being measured cluster about at least one discrete value,...

A photometer that uses a set of color filters to measure the intensity of light in various regions of the spectrum.

Near-infrared spectroscopy (NIRS) is a non-invasive analytical technique that uses the near-infrared region of the...

A synchrotron is a type of particle accelerator that uses magnetic fields to steer charged particles, typically electrons or...

That region of the electromagnetic spectrum to which the retina is sensitive and by which the eye sees. It extends from...

1. An undulation or vibration; a form of movement by which all radiant energy of the electromagnetic spectrum is estimated...

Optical fiber channel characterization scheme based on three assumptions; the discrete mode spectrum can be replaced by a...

Gamma ray radiation released when matter and antimatter, such as electron and positron, unite and eliminate each other,...

The photographic recording of visible and ultraviolet spectra on an ordinary photograph.

A nitrogen vacancy (NV) refers to a specific type of defect or impurity in a crystal lattice where a nitrogen atom replaces...

Ratio, to the luminance of a test color, of the luminance of the spectrum color that matches the test color when mixed with...

Ultraviolet-C (UV-C) refers to a specific range of ultraviolet radiation with shorter wavelengths than those of visible...

On a chromaticity diagram, the line on which fall the chromaticities of the pure spectrum colors.

A spectroradiometer is a device used to measure the intensity of light at different wavelengths across the electromagnetic...

Radiation emitted by electrons when they travel in circular orbits at speeds close to that of light. Synchrotron radiation...

A spectrum of component wavelengths whose values are separate from each other.

The narrowest line of the cadmium spectrum; the red line has the purest radiation.

Also known as the Wiener spectrum or the noise power spectrum, the optical power spectrum is a fundamental quantity in...

Dispersion refers to the phenomenon where different wavelengths (colors) of light travel at different speeds when passing...

Extreme ultraviolet (EUV) refers to a specific range of electromagnetic radiation in the ultraviolet part of the spectrum....

A helium-neon (HeNe) laser is a type of gas laser that emits visible red light at a wavelength of 632.8 nm. It operates...

Deep ultraviolet (DUV or deep-UV) refers to a specific range of ultraviolet light with shorter wavelengths than those in the...

A spectrum having some lines that are darker than others or that contrast against a light, continuous-spectrum background.

A transmission or reflecting grating with a flat or plane surface requiring a lens or concave mirror to focus the spectrum.

Radiation consisting of more than a single wavelength in the visible region of the spectrum.

A detector-Dewar assembly typically refers to a combination of a detector and a Dewar flask used in scientific instruments,...

The separate spectral lines formed by a diffraction grating that are characterized by one wavelength difference in path...

A spectral signature, in the context of remote sensing and spectroscopy, refers to the unique pattern or characteristic...

The analysis of light in the blue region of the visible spectrum.

Ultraviolet (UV) fiber optics refers to optical fibers that are designed and optimized for the transmission of ultraviolet...

Tip-enhanced Raman scattering (TERS) is a powerful technique that combines Raman spectroscopy with the enhanced spatial...

A microspectroscope equipped with a sensing and recording device, such as a camera, to measure the spectrum formed by...

Gallium arsenide phosphide (GaAsP) is a semiconductor alloy composed of gallium (Ga), arsenic (As), and phosphorus (P). It...

A vibrational transition refers to a change in the vibrational energy of a molecule. Molecules consist of atoms that are...

1.) Generally, the electromagnetic spectrum within the wavelength region extending from the vacuum ultraviolet at 40 nm to...

A chemical detection technique used to measure molecules that have a magnetic dipole moment. The analysis is directed to...

A coating applied to a neutral density glass that is designed to reduce the amount of light evenly across the transmitted...

That point in the electromagnetic spectrum at which an optical system focuses the most chemically effective rays.

A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...

The theorem stating that, when the sampling period in a recorded sample hologram is matched to the object spectrum, the...

An optical instrument for forming the spectrum of a light source and recording it on a film. The dispersing medium may be a...

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

The reversible change in the absorption spectrum of certain compounds upon irradiation with a given wavelength of light.

A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...

Photochromic refers to a property exhibited by certain materials, typically organic compounds or dyes, which undergo...

An instrument that measures the wavelengths of an x-ray spectrum by the diffraction of x-rays from a crystal with a given...

An optical filter is a device that selectively transmits or blocks specific wavelengths, or colors, of light. Optical...

FTIR (Fourier transform infrared) spectrometer is a powerful analytical instrument used to obtain an infrared spectrum of...

Förster resonance energy transfer (FRET) is a mechanism describing the transfer of energy between two closely spaced...

An electric arc that is formed in mercury vapor through which an electric current flows. The intensity of the illumination...

A spectrophotometer designed for use in the 200- to 380-nm range of the electromagnetic spectrum and equipped with a...

A homogeneous optical medium or coating that transmits only in particular regions of the spectrum. It is used to change or...

The bands found by Vegard in the spectrum of the aurora borealis and by Kaplan in the nitrogen afterglow. They are formed by...

The measurement and analysis of color using a photoelectric instrument having three filters with broad spectrum bands.

An instrument using a Michelson interferometer, a beamsplitter, two plane mirrors and a detector to give Fourier analysis of...

Spectrometric analysis of the distinct and characteristic spectra of atoms of elements. The atoms are energized to emit...

Spectral flow cytometry is an advanced flow cytometry technique that expands the capabilities of traditional flow cytometry...

A line of the Raman spectrum that fulfills Stokes' law because it possesses a wavelength that is greater than the radiation...

Optical coherence tomography (OCT) is an imaging technique used in medical diagnostics and biomedical research to obtain...

A thermal-infrared camera, often referred to simply as a thermal camera, is a type of imaging device that detects infrared...

Attenuated total reflectance (ATR) spectroscopy is a technique used in analytical chemistry to obtain IR spectra of samples....

An analytical technique used to determine the nature of extremely small samples by forming the x-ray spectrum of the samples...

Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1...

The principle stating that the displacement of spectrum lines is determined by the distance between, and relative velocity...

A swept-source laser, also known as a wavelength-swept laser, is a type of laser that rapidly and continuously changes its...

A spectroscopic technique used in the detection of free radicals by virtue of their electronic spectra. In this method, an...

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

A type of glass optical fiber that provides low pulse dispersion over a broad portion of the light spectrum and as a result...

The bands of spectral lines representing the electronic transition in a molecule.

Spectroscopy is a technique used in the study of interactions between matter and electromagnetic radiation. It involves...

The spectrum of the light produced by vaporizing an element in an electric arc.

Entirely analogous to color photography, but inclusive of light bands that do not appear in the visible spectrum.

Hyperchromic shift refers to an increase in the absorption of light, leading to a higher absorbance, often observed in...

An instrument designed to measure the proportion of light emitted by a source in the blue region of the spectrum.

A technique for measuring the energy spectrum of electrons emitted during the absorption of ultraviolet radiation. This...

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

A form of photometric measurement, often used with light sources that are transparent or fluctuating, in which a...

Controlled beam technology that introduces beams of sunlight through holes in a roof that are relayed throughout the...

A diffraction grating with lines and grooves formed so as to concentrate the radiation of a particular wavelength into one...

A prism is a geometric optical element with flat, polished surfaces that refract light. It is typically a solid, transparent...

Phototherapy is a medical treatment that involves the use of light to treat various conditions, particularly those related...

The emission spectrum formed by the radiation from a sample that has been evaporated by a nonluminous flame.

The detection and analysis of naturally formed extraterrestrial electromagnetic radiation within the radio frequency range...

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

Multispectral imaging is a technique that involves capturing and analyzing images at multiple discrete spectral bands within...

A photocathode that exhibits maximum sensitivity in the blue and ultraviolet regions of the spectrum. The sensitivity is...

The green line, in the spectrum of the aurora borealis, that has a wavelength of 5577 Å; it is caused by a forbidden...

Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other...

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

A chemical compound that exhibits a reversible change in its absorption spectrum upon irradiation with given wavelengths of...

Short wavelength infrared (SWIR) refers to the portion of the infrared spectrum that encompasses wavelengths roughly between...

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

Spectral repeatability refers to the consistency and reproducibility of spectral measurements across multiple trials or...

Gallium nitride-based light-emitting diodes (GaN-based LEDs) are semiconductor devices that emit light when an electric...

A high-contrast transparency of the gas sought, or an array of exit slits that correlates with some features of the...

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

Surface-enhanced Raman scattering (SERS) is a powerful analytical technique that enhances the Raman scattering signal of...

The measurement of the spectrum bands formed by a spectroscopic sample, based on the differences between the sample and the...

Electromagnetic radiation detectable by the eye, ranging in wavelength from about 400 to 750 nm. In photonic applications...

The term half bandwidth (HBW) generally refers to the width of a spectral band or frequency range at half of its maximum...

That radiation characterized by wavelengths ranging from 0.2 to 0.3 µm in the electromagnetic spectrum.

A long-pass filter is an optical filter that allows longer wavelengths of light to pass through while blocking or...

Radiation whose spectrum runs between 100 and 300 nm. Any work with these wavelengths requires evacuated equipment.

High dynamic range (HDR) refers to a technology that allows for a broader and more dynamic range of luminosity in visual...

Photosynthetically active radiation (PAR) is the 400- to 700-nm region (visible light) of the electromagnetic spectrum that...

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

Quantum dot light-emitting diode (QLED) is a display technology that utilizes quantum dots, which are semiconductor...

The total range of wavelengths, extending from the shortest to the longest wavelength or conversely, that can be generated...

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

A technique for detecting free radicals by their electronic spectra. The material to be studied is placed in a...

A spectroradiometer having a means to scan different regions of the light spectrum, providing simultaneous representations...

Circular dichroism (CD) is a spectroscopic technique used to study the structural characteristics of chiral (asymmetric)...

A filtering method that restores a blurred image by setting its power spectrum equal to that of the original image.

Also called complementary dominant wavelength. On a chromaticity diagram, the wavelength on the spectrum locus that lies on...

A small handheld instrument consisting of a slit and collimator that feeds light into a small direct-vision dispersing...

An infrared light source is a device that emits light in the infrared spectrum, which lies beyond the visible spectrum of...

A broadband, visible picosecond probe pulse capable of measuring an entire absorption spectrum in one shot.

Three filters used in making a color print of a color negative, red, green and blue-violet, respectively. Each filter...

A spectrograph used to detect radiation in the range of the ultraviolet in the electromagnetic spectrum. It is made up of...

A lamp that yields a nonluminous flame; used in the spectroscopic analysis of radiation emitted by a substance placed in the...

Spectrum characterized by equal energy (power, flux) per unit wavelength interval.

A laser having a lasing material that is a fluorescing organic dye. Depending on the dye used, it can produce emission in...

A scanning device used to cyclically tune through a given frequency range to determine the amplitude-frequency distribution...

The angular spectrum approach is a mathematical and computational technique used in the field of optics to analyze and...

A light-tight box that receives light from an object or scene and focuses it to form an image on a light-sensitive material...

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

See optical spectrum; visible spectrum.

A sapphire window refers to a transparent optical component made from sapphire crystal. Sapphire is a single-crystal form of...

An electromagnetic wave lying within the region of the frequency spectrum that is between about 1000 MHz (1 GHz) and 100,000...

Spectrum broadening that results from the influence of an electric field.

Etaloning is an optical phenomenon that occurs in imaging systems, particularly in devices such as spectrometers,...

Germicidal ultraviolet (GUV) refers to a specific range of UV radiation that has disinfectant properties capable of killing...

That invisible region of the spectrum just beyond the violet end of the visible region. Wavelengths range from 1 to 400 nm.

Radiation from the sun that is made up of a very wide range of wavelengths, from the long infrared to the short ultraviolet...

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

An immersion liquid used to treat polarizing filters to eliminate the effects of surface variations and to minimize the...

GaN (gallium nitride) distributed feedback (DFB) lasers refer to a specific type of semiconductor laser based on Gallium...

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

The first-order spectrum formed by a diffraction grating.

A form of dispersing prism, often used in monochromators, that consists of a common right-angle prism with a 30°...

The light spectrum formed by an explosive reaction or by the electrical explosion of a metallic wire by a strong current.

An imaging process, similar to specific Doppler mapping radar techniques, that utilizes a laser, an optical imaging system,...

A solar simulator is a device used to replicate the spectrum and intensity of sunlight in a controlled environment for...

The collection and detection of x-rays by virtue of their ionizing properties. The ionization may be perceived directly by a...

The series of interference bands that appear in the spectrum when a specified glass plate is inserted into a spectroscope,...

The fluorescent emission spectrum emitted by certain substances following the irradiation of one of these substances with...

A spectrophotometer is a scientific instrument used to measure the intensity of light at various wavelengths in the...

The study and photographing of microscope specimens in ultraviolet light; using an optical microscope containing fluorite...

The indistinct, less luminous portion lying immediately outside an electric arc whose spectrum often differs from that of...

The displacement of spectrum lines, as determined by the increasing distance between, and the relative velocity of, the...

MWIR stands for mid-wave infrared, referring to a specific range of wavelengths within the infrared spectrum. Infrared...

A reflecting grating ruled on a concave spherical surface that not only disperses the light but focuses the spectrum. The...

A device used to measure the masses and relative concentrations of atoms and molecules. It utilizes the Lorentz force...

An aerial reconnaissance system that can transmit, in near real time, image data recorded by IR and visual-spectrum sensors,...

Optical cements and adhesives are specialized materials used in the assembly and bonding of optical components in optical...

An objective that uses the mineral fluorite in its construction to reduce the secondary spectrum. It is usually intermediate...

An InGaAs photodiode refers to a photodetector device that is constructed using a semiconductor material composed of a...

Ultraviolet reflectance refers to the ability of a material or surface to reflect UV light. Ultraviolet light is...

In the spectral sense, an optical source that emits one or more spectrally narrow lines as opposed to a continuous spectrum....

A measure of the optical path length for light traveling from the sun or other celestial source through Earth's atmosphere...

That part of the infrared spectrum from about 30 to 1000 µm.

Any of the many devices used to detect the presence of radiation from a specific region of the electromagnetic spectrum.

A blue diode laser is a type of semiconductor laser that emits light in the blue wavelength range of the electromagnetic...

An alexandrite laser is a solid-state laser that utilizes a synthetic crystal made from the rare earth element alexandrite...

A stimulus that contains equal energy at each wavelength in the visible region of the spectrum.

Optical glass refers to a type of glass specifically engineered and manufactured for use in optical components and systems,...

A laser with output over a wide range of wavelengths spanning the far-infrared region of the spectrum (30 to 1000 µm);...

A spectrum that is continuous in the UV region with borders ranging from the visible to 300 A and lower.

LiFi, short for light fidelity, is a wireless communication technology that utilizes visible light or infrared light to...

Radiation emitted from vibrating charged particles. A combination of oscillating electrical and magnetic fields that...

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

A terahertz spectrometer is a scientific instrument used to measure and analyze the properties of materials in the terahertz...

Devices in which the lasing medium is a vapor of metal atoms or ions, sometimes mixed with another gas. Metal vapor lasers...

In analysis, a reference spectrum, having predetermined wavelengths, that is used to determine the wavelengths of another...

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

Referring to the bandwidth and spectrum location of the signal produced by television or radar scanning.

A spectrophotometer that makes use of filters to isolate narrow bands of the spectrum.

An Er:YAG laser is a type of solid-state laser that uses a crystal made of erbium-doped yttrium aluminum garnet...

A CMOS camera refers to an imaging device that employs a complementary metal-oxide-semiconductor (CMOS) image sensor to...

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

A spectrum that originates from molecules and that is composed of bands which, in turn, consist of many closely spaced...

Irregular waves; e.g., light waves, having little coherence and a broad spectrum of frequencies.

In a general sense, any one of a class of instruments used to disperse radiation, visible or invisible, into its component...

A group of frequencies or wavelengths on the electromagnetic spectrum which exhibits resonance or energy contributions near...

Electromagnetic radiation with frequencies between 300 GHz and 10 THz, and existing between regions of the electromagnetic...

A near-infrared (NIR) spectrometer is an analytical instrument used to measure the absorption, transmission, or reflection...

An absorption peak refers to a sharp increase or spike in the absorption of electromagnetic radiation at a particular...

Analysis of the reflection spectrum that allows the determination of the experimental dielectric function.

An incandescent or fluorescent lamp whose emittance spectrum resembles that of daylight.

Color sensitivity extended to cover the entire visible spectrum out to the red.

Essentially, a hologram of a hologram, in which the first-generation hologram is masked with a narrow slit. During image...

The radiation spectrum of matter found in condensed states, liquid or solid, that is continuous and not a line spectrum. The...

That element of a spectrum line in scattered radiation having a frequency equal to that of the corresponding incident...

Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but...

A traveling microscope or an automatic microdensitometer used to measure the spectrum plate obtained in a spectrograph.

A measure of the wavelength extent of a spectrum.

Long-wave infrared (LWIR) refers to a specific range of the infrared spectrum. Infrared radiation is divided into three main...

A device that uses electromagnetic fields to separate electrically charged particles according to their masses. As a beam of...

A GaAlAs laser is a type of semiconductor laser diode that emits light in the near-infrared region of the electromagnetic...

The three lines in the spectrum of cadmium that have the purest radiations and that were first used by Michelson to...

An infrared detector is a device that is used to detect and measure infrared radiation, which lies beyond the visible...

An instrument designed to collect naturally formed extraterrestrial electromagnetic radiation within the radio frequency...

A color whose hue is not produced by a single wavelength in the visible spectrum, but is instead produced by mixing the...

The wavelength or frequency corresponding to an absorption resonance with a given molecular or atomic species. The line...

One area of image enhancement, accomplished by spatial filtering schemes, that usually involves attenuation of phase changes...

A technique used for noncontact inspection of semiconductor wafers. The material is illuminated by an excitation source that...

Luminescence is the emission of light that occurs without the involved substance undergoing a significant increase in...

In spectroscopy, the parallel bands that vary in lightness and darkness or color, and that are formed when light is...

A material, such as gold black and carbon black, that is used as a solar absorber because of its high absorptance and low...

A Nernst glower, also known simply as a Nernst lamp or Nernst filament, is a type of incandescent lamp or radiant heater...

A quantum cascade laser (QCL) is a type of semiconductor laser that operates based on the principles of quantum mechanics....

The rays (such as ultraviolet rays) lying past the visible region of the spectrum.

In the context of optical materials, the term "impurity level" refers to the presence of foreign atoms or molecules within...

Infrared optics refer to optical components and systems designed to manipulate and control infrared (IR) light, which lies...

A group of four cameras loaded with different combinations of filters and film (one is usually an infrared color film) to...

A critical image parameter in applications where object position may change dynamically relative to the imager; this is a...

An infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating...

An emission spectrum consisting of bright bands against a dark background.

Diffuse reflectance spectroscopy (DRS) is a nondestructive analytical technique used to investigate the optical properties...

A blackbody source, often simply referred to as a blackbody, is a theoretical or practical physical object that absorbs all...

An acronym for microwave amplification by stimulated emission of radiation. Predecessor to the laser, the maser or...

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

On the CIE chromaticity diagram, the distance from the achromatic point to the sample point, divided by the distance from...

The simulation of solar radiation in the infrared and ultraviolet spectrum for the analysis of extraterrestrial sunlight and...

Hyperspectral imaging is an advanced imaging technique that captures and processes information from across the...

The removal of the zero-order component of the Fourier spectrum distribution of an object with a small, opaque absorber or...

A device used to project a reference spectrum next to a spectrum to be analyzed to provide visual comparison.

The radio waves of the electromagnetic spectrum that have frequencies of up to 10,000 megacycles per second.

The spectrum produced by the interference of light provided that the source used to create the interference has a broad...

Sapphire optical fiber is a type of optical fiber made from single-crystal sapphire, which is a form of aluminum oxide...

A spectrum that displays the distribution in mass or in mass-to-charge ratio of ionized atoms, molecules or molecular parts....

Germanium crystal refers to a crystalline form of the element germanium (Ge), which is a metalloid and semiconductor...