The photographic recording of a subject that exhibits luminescence only for an extremely short time (10-8 s) after the exciting source is removed. In the process, the subject may be illuminated by several sources: x-rays; electron beams; visible...

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

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

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

A printing process of electrostatic electrophotography that uses a photoconductive insulating medium, in conjunction with...

A filter, partially opaque to near-ultraviolet, visible and infrared radiation, that may be made by exposing and processing...

A fiber Bragg grating (FBG) is a type of optical filter that is inscribed or "written" into the core of an optical fiber. It...

The ionization and spark emission due to exposure to ultraviolet radiation.

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

An atomic absorption spectrometer (AAS) is an analytical instrument used to determine the concentration of specific chemical...

A crystal often used for windows and refracting components in the ultraviolet, visible and infrared. Characteristically,...

Fiber that emits luminescent radiation excited by ultraviolet, x-ray or high-energy particles.

The phenomenon in which alkali metals are transparent to ultraviolet radiation.

A tube containing mercury vapor and lined with a phosphor. When current is passed through the vapor the strong ultraviolet...

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

Excimer laser coronary angioplasty (ELCA) refers to a medical procedure used in the treatment of coronary artery disease....

A device for measuring diffraction grating efficiency at any angle of incidence, consisting of a reflectometer wherein the...

A device that serves to detect the presence of vacuum ultraviolet radiation. It may be photographic film, a thermopile, ion...

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

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

A microscope used either to detect selective absorption of various wavelengths by the specimen or to achieve increased...

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

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

A fluorescent screen refers to a phosphorescent or fluorescent-coated surface that emits visible light when exposed to other...

A photographic method used to obtain an image of a subject by means of its reflectance of incident ultraviolet radiation. An...

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

Any organic substance, that when dissolved in appropriate liquid based solvents will absorb and emit electromagnetic...

A spectrometric instrument that detects radiation simultaneously in multiple channels, sorts it spectrally from the deep...

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

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

Abbreviated TEA CO2 laser. A gas laser that provides shorter pulses and higher peak powers than conventional CO2 lasers. The...

The light flash that occurs when an electrical field is applied to a phosphor already excited by ultraviolet radiation.

A method of spectral analysis using wavelengths between 100 and 300 nm that utilizes both emission and absorption techniques.

A specific type of photographic plate designed with only a small amount of gelatin to function in the extreme ultraviolet...

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

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

A light source, such as the sun or an incandescent lamp, that freely penetrates ordinary glass bulbs and emits in the...

Glass designed to absorb most infrared and ultraviolet radiation while transmitting most of the visible region.

A compound prism formed by cementing together two 30° prisms, one of right-handed and one of left-handed quartz. It has...

Also known as UV-VIS spectrometer, a device that measures the absorbance, reflectance or transmittance of light in the...

In ultraviolet and fluorescence photography, the term applied to the filter used in the photographic system and with the...

A lens intended for use with wavelengths shorter than about 380 nm. It must be made of quartz, calcium fluoride, lithium...

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

Silicon carbide (SiC) light-emitting diodes (LEDs) are semiconductor devices that emit light when an electric current is...

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

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

Phototoxicity refers to the harmful effects caused by exposure to light, particularly intense or ultraviolet (UV) light, on...

The optical form of the crystal fluorspar, calcium fluoride, that is utilized for its low optical dispersion, its low...

A microchannel plate (MCP) is a specialized electron multiplier device used in various applications such as particle...

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

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

An arc lamp whose carbon electrodes are enclosed in a transparent chamber, resulting in an arc that is steadier, lasts...

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

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

Also known as TEA laser. A coherent optical source with a wide wavelength range in the infrared, visible and ultraviolet...

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

A lamp that has mercury in a tube or bulb that has first been evacuated. The electricity travels through the vapor between...

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

An arc flash is a sudden release of electrical energy due to an electric arc — a continuous, high-current discharge of...

A microscope that uses a reflecting objective; often used with ultraviolet or infrared radiation.

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

A means of determining a prism's index of refraction by placing the prism so that its emergent face is perpendicular to the...

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

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

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

A lamp with a quartz envelope that transmits radiation generally rich in the ultraviolet.

A type of optical microscope that allows the specimen being viewed to be irradiated by ultraviolet, violet and occasionally...

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

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

A scintillation crystal, also known simply as a scintillator, is a material that emits light when it interacts with ionizing...

A type of lamp that emits a high quantity of ultraviolet radiation. This may be an arc lamp encased in a bulb of a glass...

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

The hydrogen-derived, ultraviolet radiation running from 1216 to 512 A, discovered by Theodore Lyman in 1914.

A photon-counting instrument for use in both space-borne and ground-based photometric and spectroscopic instrumentation....

A filter that transmits infrared and ultraviolet but is opaque to visible radiation.

A fluorophore is a molecule or a portion of a molecule that has the ability to emit light upon excitation by an external...

A holographic plate coated by photopolymeric mixtures that are composed of one or more monomers and a photoredox catalyst...

The application of ultraviolet, x-ray, infrared and conventional photography to law enforcement.

A pulsed laser having molecular nitrogen as laser material and a wavelength output of 337 nm in the ultraviolet region. It...

An image-forming system that uses mirrors rather than lenses. Such objectives are frequently used for astronomical...

The term photochemical pertains to chemical processes or reactions that are initiated or influenced by the absorption of...

A chemical substance that exhibits fluorescence when excited by ultraviolet radiation, x-rays or an electron beam. The...

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

Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material...

Any source that emits radiation of wavelengths between 100 and 300 nm. Instruments used to study these sources must be...

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

A type of glass contrived by Schott that is highly transparent to ultraviolet radiation.

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

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

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

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

The photographic recording that uses ultraviolet radiation to irradiate the microscope sample being examined and to form an...

Glass that transmits near-ultraviolet radiation but is opaque in the visible region. Also known as woods glass.

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

A filter, used in photography, that absorbs the ultraviolet and extreme blue violet radiation scattered by atmospheric haze.

The process by which an atomic system changes from one energy level to another by either the emission or absorption of...

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

Any pyrheliometer that has a filter placed over its sensor to limit the range of solar radiation it will detect; used to...

A device that detects and measures the quantity of exposure to nuclear radiation. It uses a special glass rod that...

The use of chemicals or radiation to induce a desired change in a substance; e.g., some optical adhesives are set by...

An electron tube that employs electromagnetic radiation to produce a visual replica of an image produced on its cathode....

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

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

Sapphire refers to a crystalline form of aluminum oxide (Al2O3) that is used in various optical and photonic applications...

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

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

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

Optical coatings are thin layers of materials applied to optical components, such as lenses, mirrors, filters, and prisms,...

The longest wavelengths of the ultraviolet region, nominally 300 to 400 nm.

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

A technique, involving spectrophotometry in the ultraviolet, that is designed to determine the colors of thin-layer...

1. The reduction in the developable density of a photographic emulsion that has been extremely overexposed. 2. In a laser...

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

A discharge lamp filled with deuterium to produce high-intensity ultraviolet radiation for use in spectroscopic analysis.

Attosecond-pump attosecond-probe spectroscopy (APAP) is an advanced technique in ultrafast spectroscopy that allows...

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

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

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

A filter that is opaque from 200 to 400 nm.