Free Summit Next Week: Learn from over 150 years of Optical Design Experience!
Search
Menu
Meadowlark Optics - SEE WHAT
Spectroscopy Dictionary Terms

nuclear quadrupole resonance spectroscopy
A chemical detection technique used to measure molecules that have a magnetic dipole moment. The analysis is directed to...
cold atom
Cold atoms refer to atoms that have been cooled to extremely low temperatures, typically in the microkelvin (µK) to...
etalon
An etalon is an optical device that consists of two parallel reflecting surfaces separated by a precise and known distance....
dichroic coating
A dichroic coating, also known as a dichroic filter or dichroic mirror, is an optical coating designed to selectively...
mask spectrometer
Instrument that uses absorption spectroscopy to detect gases in planetary atmospheres. Dispersed incoming radiation is...
off-axis paraboloid and ellipsoid mirror
Off-axis paraboloid and ellipsoid mirrors are specialized optical components used in various optical systems, particularly...
absorption peak
An absorption peak refers to a sharp increase or spike in the absorption of electromagnetic radiation at a particular...
circular dichroism spectroscopy
A type of spectroscopy used extensively in the analysis of biological samples. Because most biologically synthesized...
fluorescence correlation spectroscopy
A powerful method, referred to as FCS, for determining the average diffusion coefficients of fluorescent molecules in...
Raman fiber probe
A flexible fiber cable with a small diameter that transports light from the excitation laser to the target. Used in Raman...
broadband dielectric mirrors
Broadband dielectric mirrors, also known as broadband mirrors, are optical coatings designed to efficiently reflect or...
multianode microchannel array detector
A photon-counting instrument for use in both space-borne and ground-based photometric and spectroscopic instrumentation....
flame emission spectroscopy
A technique in photometry that uses an oxyhydrogen or oxyacetylene flame to optically excite a solution containing the...
metabolic imaging
Metabolic imaging refers to the visualization and quantification of metabolic processes within living organisms, tissues, or...
cryospectroscopy
The spectrographic analysis of matter that is in a cooled state. Generally, a mechanical refrigerator is used to lower the...
low-temperature spectroscopy
The analysis of structural and molecular dynamics caused by low temperature.
laser absorption spectroscopy
An experimental research technique by which absorbed or unabsorbed radiation is analyzed in order to characterize and...
electric dichroism spectroscopy
The use of a krypton laser system for the measurement of small molecules aligned by an electric field, by analyzing the...
electron multiplication charge-coupled device camera
An EMCCD (electron-multiplying charge-coupled device) camera is a type of scientific camera specifically designed for...
Auger electron spectroscopy
The energy analysis of electrons released in a secondary step following initial excitation or ionization.
atomic absorption spectrometer
An atomic absorption spectrometer (AAS) is an analytical instrument used to determine the concentration of specific chemical...
near-infrared camera
A near-infrared (NIR) camera is an imaging device designed to capture images in the near-infrared region of the...
magnetic rotation spectroscopy
Technique in which the polarization rotation of light, and its relationship to the magnetic field strength can be analyzed...
electron spectroscopy
The theory and interpretation of spectra produced by the electron emissions of substances after their irradiation by x-rays.
distributed feedback laser
A distributed feedback laser (DFB laser) is a type of semiconductor laser diode designed to emit coherent, narrow-bandwidth...
volume Bragg gratings
Volume Bragg gratings (VBGs) are specialized optical elements that consist of periodic variations in refractive index...
fiber-linked array image formatter
A wide-field multiobject spectroscopy system used in astronomy, in which a bundle of low-loss optical fibers positioned on...
terahertz spectrometer
A terahertz spectrometer is a scientific instrument used to measure and analyze the properties of materials in the terahertz...
intensified charge-coupled device camera
An intensified charge-coupled device (ICCD) camera is an advanced imaging device that combines the capabilities of both an...
reflection grating
A reflection grating is an optical component that consists of a series of closely spaced, parallel reflecting surfaces or...
emission spectroscopy
A study of the energies and wavelengths of radiation emitted by atoms and molecules when particular physical conditions are...
photoluminescence
Photoluminescence is a phenomenon in which a material absorbs photons (light) at one wavelength and then re-emits photons at...
phosphorescence spectroscopy
The spectroscopic study of the radiation emitted by the lifetime of phosphorescence.
mode-locked lasers
Mode-locking is a technique used in lasers to produce ultrashort pulses of light with durations on the order of picoseconds,...
holographic grating
A holographic grating is a type of diffraction grating that is produced using holographic recording techniques. It consists...
laser optics
Laser optics refers to a broad category of optical components and systems designed for manipulating and controlling laser...
laser-excited Shpol'skii spectroscopy
A type of fluorescence spectroscopy in which an excimer laser, a dye laser and a frequency-doubling device are used to...
spectral signature
A spectral signature, in the context of remote sensing and spectroscopy, refers to the unique pattern or characteristic...
near-infrared spectrometer
A near-infrared (NIR) spectrometer is an analytical instrument used to measure the absorption, transmission, or reflection...
blue diode laser
A blue diode laser is a type of semiconductor laser that emits light in the blue wavelength range of the electromagnetic...
near-infrared spectroscopy cerebral oximetry
A monitoring technique used to measure the oxygen saturation levels in the brains of patients, commonly in operating room...
femtosecond laser
A femtosecond laser is a type of laser that emits ultrashort pulses of light with durations on the order of femtoseconds,...
laser spectroscopy
That part of the science involved in the study of the theory and interpretation of spectra that uses the unique...
magnetic resonance spectroscopy
A method of studying the chemical and physical properties of atoms and molecules (typically living tissue and chemical...
Raman spectroscopy
Raman spectroscopy is a technique used in analytical chemistry and physics to study vibrational, rotational, and other...
detector-Dewar assembly
A detector-Dewar assembly typically refers to a combination of a detector and a Dewar flask used in scientific instruments,...
dichroic mirror
A dichroic mirror, also known as a dichroic beamsplitter or interference filter beamsplitter, is an optical device that...
atomic fluorescence spectroscopy
The analysis of fluorescence emitted by discrete atoms, in flames, that have absorbed radiation from an external source. It...
tip-enhanced Raman spectroscopy
A spectroscopic technique that combines the high chemical specificity of Raman scattering and signal sensitivity provided by...
microcomb
A microcomb, short for microresonator frequency comb, is a novel photonic device that generates a precise series of evenly...
optical table
An optical table, also known as an optical bench or an optical breadboard, is a specialized platform used in optics...
fiber optic spectrometer
A fiber optic spectrometer is a device used for measuring the spectral content of light. It utilizes optical fibers to...
frequency comb
A frequency comb is a precise and regular series of equally spaced spectral lines, or frequencies, that are generated with...
fiber-coupled photoconductive antenna
A fiber-coupled photoconductive antenna (FCPA) is a type of optoelectronic device that combines a photoconductive antenna...
near-infrared spectroscopy
Near-infrared spectroscopy (NIRS) is a non-invasive analytical technique that uses the near-infrared region of the...
atomic absorption spectroscopy
The analysis of the atomic structure of a sample by means of a source radiation that is absorbed and emitted by the sample...
GaN distributed feedback lasers
GaN (gallium nitride) distributed feedback (DFB) lasers refer to a specific type of semiconductor laser based on Gallium...
detector array
A detector array refers to a collection of individual detector elements arranged in a two-dimensional grid or matrix format....
atomic force microscope
An atomic force microscope (AFM) is a high-resolution imaging and measurement instrument used in nanotechnology, materials...
x-ray microprobe analysis
The method of acquiring characteristic x-ray spectra from microscopic samples by use of the combination of a scanning...
Ti:sapphire laser
A Ti:sapphire laser is a type of solid-state laser that utilizes a titanium-doped sapphire crystal as the gain medium. The...
resonance fluorescence
In atomic fluorescence spectroscopy, fluorescence emitted by an atom at a spectral line of a wavelength identical to that of...
fused quartz and silica
Fused quartz and silica are closely related materials, both composed primarily of silicon dioxide (SiO2), but they are...
supercontinuum
Supercontinuum refers to a broad spectrum of light that spans a wide range of wavelengths, typically from the visible to the...
acousto-optic modulators and deflectors
An acousto-optic modulator (AOM) is a device that utilizes the interaction between sound waves and light waves to modulate...
circular dichroism
Circular dichroism (CD) is a spectroscopic technique used to study the structural characteristics of chiral (asymmetric)...
long-path absorption spectroscopy
The method that, by measuring the absorption along an atmospheric path at wavelengths ranging from two to a continuum, can...
spectroscopic light source
A discharge tube filled with various gases and used as a source in spectroscopy.
infrared optic
Infrared optics refer to optical components and systems designed to manipulate and control infrared (IR) light, which lies...
radiation thermocouple
A thermocouple that is used in infrared spectroscopy to detect a sample's infrared emittance. See thermocouple.
emission spectrum
An emission spectrum is a graphical representation or a characteristic pattern of the wavelengths or frequencies of light...
transverse mode
In the context of optics and lasers, a transverse mode refers to a specific spatial pattern of the electric field within the...
microprobe
An instrument that produces an intense, tightly focused beam of ions to stimulate emissions from a minute section of a...
ultrafast pulsed laser
An ultrafast pulsed laser is a type of laser that emits extremely short pulses of light with durations typically on the...
surface-enhanced Raman spectroscopy
Surface-enhanced Raman spectroscopy (SERS) is an analytical technique that combines the principles of Raman spectroscopy...
light-beating spectroscopy
The spectroscopic analysis of optical line shapes and frequency shifts, using the technique of light beating; i.e., the...
single-molecule spectroscopy
An advanced technique that allows the detection of one molecule within a crystal or a cell through optical excitation....
attosecond-pump attosecond-probe spectroscopy
Attosecond-pump attosecond-probe spectroscopy (APAP) is an advanced technique in ultrafast spectroscopy that allows...
fluctuation spectroscopy
A technique developed to measure the molecular weight of macromolecules by analyzing the spontaneous fluctuations that occur...
scientific CMOS camera
A scientific CMOS (complementary metal-oxide-semiconductor) camera is a type of digital camera specifically designed for...
laser-induced fluorescence spectroscopy
A pump-probe technique whereby a single wavelength source may be used in order to excite a given sample to determine...
direct-line fluorescence
With respect to atomic fluorescence spectroscopy, the fluorescence that is emitted by an atom at a spectral line of a...
angstrom
An angstrom, symbolized by the Ångström or Å, is a unit of length used to express atomic and molecular...
laser pump
A source of energy that produces needed excitation for population inversion in laser operation. The excitation source that...
infrared spectroscopy
The measurement of the ability of matter to absorb, transmit or reflect infrared radiation and the relating of the resultant...
diffraction grating
A diffraction grating is an optical component consisting of a surface with a periodic structure of equally spaced, parallel...
optical grating
An optical grating, in the context of optics and physics, refers to a device with a periodic structure of closely spaced,...
attenuated total reflectance spectroscopy
Attenuated total reflectance (ATR) spectroscopy is a technique used in analytical chemistry to obtain IR spectra of samples....
spatially offset Raman spectroscopy
Spatially offset Raman spectroscopy (SORS) is a technique that extends traditional Raman spectroscopy by incorporating...
velocity modulation laser spectroscopy
A method of measuring negatively charged phase ions using a color-center or lead-salt diode laser.
dynamic spectroscopy
A spectroscopic technique used to display the intensity of an optical pulse as functions of time and frequency...
grating beamsplitter
A grating beamsplitter is an optical device that utilizes the principles of diffraction to split a beam of light into...
high harmonic generation
High harmonic generation (HHG) refers to a nonlinear optical process in which intense laser light interacts with a gaseous...
electro-optic Fabry-Perot spectroscopy
The spectroscopic analysis of interference patterns using an electronic imaging tube with a Fabry-Perot interferometer to...
APD detector
An APD detector, or avalanche photodiode detector, is a type of photodetector used to detect light or optical signals by...
photon burst detection of fluorescence
A type of laser spectroscopy used to measure short-lived isotopes by observing sudden bursts of fluorescence resulting from...
optical emission spectroscopy
In dry etching, a method of characterizing the composition of solid materials such as metal. Atoms in the OES technique are...
fiber laser
A fiber laser is a type of laser in which the active gain medium is an optical fiber doped with rare-earth ions such as...
modulation spectroscopy
A method of spectral analysis in which some property of the sample is varied and the corresponding change is measured. The...
flame spectroscopy
The study of flames by means of a laser emitting blue light and a spectrometer to measure the green fluorescence created by...
tip-enhanced Raman scattering
Tip-enhanced Raman scattering (TERS) is a powerful technique that combines Raman spectroscopy with the enhanced spatial...
nonlinear optical materials
Nonlinear optical materials are substances that exhibit optical properties that are not linearly proportional to the...
harmonic generation
Harmonic generation refers to a nonlinear optical process in which incoming photons interact with a material and produce new...
spectral repeatability
Spectral repeatability refers to the consistency and reproducibility of spectral measurements across multiple trials or...
isotopically selected laser spectroscopy
A spectroscopic technique in which an excitation band absorbs laser energy resulting in an electronic transition. The...
infrared lens
An infrared lens is an optical component specifically designed and optimized for transmitting, focusing, or manipulating...
full width half maximum
The full width at half maximum (FWHM) is a measure used in various fields, particularly in spectroscopy, signal processing,...
synchrotron
A synchrotron is a type of particle accelerator that uses magnetic fields to steer charged particles, typically electrons or...
electromodulation spectroscopy
A type of modulation spectroscopy that measures spectral reflectance or transmittance changes induced by applying a...
vibrational transition
A vibrational transition refers to a change in the vibrational energy of a molecule. Molecules consist of atoms that are...
photodischarge spectroscopy
A spectroscopic process that detects and analyzes the discharge from an extrinsic surface with less than bandgap light. This...
infrared detector
An infrared detector is a device that is used to detect and measure infrared radiation, which lies beyond the visible...
long-pass filter
A long-pass filter is an optical filter that allows longer wavelengths of light to pass through while blocking or...
diffuse reflectance spectroscopy
Diffuse reflectance spectroscopy (DRS) is a nondestructive analytical technique used to investigate the optical properties...
surface analysis by laser ionization
(SALI) A type of spectroscopy in which neutral atoms or molecules are ionized by an excimer laser beam and then measured by...
photomultiplier tube
A photomultiplier tube (PMT) is a highly sensitive vacuum tube that detects and amplifies low levels of light. It is widely...
terahertz
Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1...
ultraviolet fiber optics
Ultraviolet (UV) fiber optics refers to optical fibers that are designed and optimized for the transmission of ultraviolet...
photon correlation spectroscopy
Spectroscopy used to study the concentration, diffusion and Brownian motion of small particles suspended in a fluid by...
blackbody source
A blackbody source, often simply referred to as a blackbody, is a theoretical or practical physical object that absorbs all...
Mossbauer effect spectroscopy
Spectroscopy characterized by the Mossbauer effect - recoilless emission and absorption of nuclear gamma radiation- which...
astronomical spectroscopy
The process of using a spectrograph with a telescope to acquire information on an astronomical object's speed and physical...
InGaAs photodiode
An InGaAs photodiode refers to a photodetector device that is constructed using a semiconductor material composed of a...
Nernst glower
A Nernst glower, also known simply as a Nernst lamp or Nernst filament, is a type of incandescent lamp or radiant heater...
null process
Commonly performed in spectroscopy, the optical null process is a method for radiation detection whereby physical detectors...
time-to-amplitude converter
A time-to-amplitude converter (TAC) is an electronic circuit that converts a time interval between two events into an...
beamsplitter
A beamsplitter is an optical device used to divide a beam of light into two or more separate beams, typically by reflecting...
blaze height
Blaze height typically refers to a parameter in the context of diffraction gratings, which are optical devices consisting of...
plasma-coupled device
Monolithic self-scanning linear image sensor array for multichannel spectroscopy with a spectral range of from 200 to 1000...
dynamic light scattering spectroscopy
half bandwidth
The term half bandwidth (HBW) generally refers to the width of a spectral band or frequency range at half of its maximum...
diffraction spectrum
In spectroscopy, the parallel bands that vary in lightness and darkness or color, and that are formed when light is...
multiline laser system
A multiline laser system refers to a type of laser that is capable of emitting multiple discrete wavelengths or spectral...
quantum cascade laser
A quantum cascade laser (QCL) is a type of semiconductor laser that operates based on the principles of quantum mechanics....
ghost
1. A faint second image caused by reflection that is sometimes seen when observing through an optical instrument. 2. With...
photoconductive antenna
Photoconductive antenna (PCA) is a semiconductor element that generates or detects high-frequency electromagnetic signals....
lock-in amplifier
A lock-in amplifier is a specialized electronic instrument used to extract and measure small signals embedded in noise or...
FTIR spectrometer
FTIR (Fourier transform infrared) spectrometer is a powerful analytical instrument used to obtain an infrared spectrum of...
flash spectroscopy
The study and interpretation of the spectra of substances after they have absorbed the radiant energy emitted by a brief,...
Rowland ghosts
In spectroscopy, the false images arranged symmetrically on both sides of the true line and caused by irregularities in the...
photoacoustic spectroscopy
A method for obtaining the optical absorption spectra of solids, semisolids, liquids and gases. PAS is inherently...
photodetector
A photodetector, also known as a photosensor or photodiode, is a device that detects and converts light into an electrical...
absorption spectroscopy
Experimental method of measuring the transmission of a given sample as a function of the wavelength.
motion controller
In optics, a motion controller refers to a device or system that precisely controls the movement of optical components, such...
vacuum ultraviolet spectroscopy
A method of spectral analysis using wavelengths between 100 and 300 nm that utilizes both emission and absorption techniques.
mode beating
In optics, "mode beating" refers to an interference phenomenon that can occur in laser systems with multiple longitudinal...
monochromator
A monochromator is an optical instrument used to isolate and select a narrow range of wavelengths from a broader spectrum of...
spectroscopy
Spectroscopy is a technique used in the study of interactions between matter and electromagnetic radiation. It involves...
molecular spectroscopy
Spectrum analysis concerned with the spectra formed by transitions in molecules.
laser diode module
A laser diode module is a compact device that incorporates a laser diode, optics, and often other components into a single...
reflective spectroscopy
Reflectance spectroscopy is a technique used to analyze the reflective properties of materials across various wavelengths of...
GaAlAs laser
A GaAlAs laser is a type of semiconductor laser diode that emits light in the near-infrared region of the electromagnetic...
residual gas analysis
A measurement in optical thin-film coating processes whereby the gases remaining in the vacuum chamber after coating are...
microchannel plate
A microchannel plate (MCP) is a specialized electron multiplier device used in various applications such as particle...
nuclear magnetic resonance spectroscopy
That branch of spectroscopy that applies to the study of interactions between energy and atomic nuclei. The simultaneous...
free-electron laser
A free-electron laser (FEL) is a type of laser that generates coherent, high-intensity electromagnetic radiation by using a...
plasmonics
Plasmonics is a field of science and technology that focuses on the interaction between electromagnetic radiation and free...
Fabry-Perot spectroscopy
The spectroscopic analysis of interference patterns using a monochannel spectrometer, spectrograph or multichannel...
indium gallium arsenide camera
An InGaAs (indium gallium arsenide) camera is a type of imaging device that utilizes InGaAs sensors to capture images in the...
deep ultraviolet
Deep ultraviolet (DUV or deep-UV) refers to a specific range of ultraviolet light with shorter wavelengths than those in the...
electroreflectance spectroscopy
A type of electromodulation that measures changes in spectral reflectance.
parallel scanning
Parallel scanning refers to a method of acquiring data or images simultaneously from multiple sources or in parallel, rather...
fluorescence spectroscopy
The spectroscopic study of radiation emitted by the process of fluorescence.
diffraction efficiency
Diffraction efficiency is a measure of how effectively a diffractive optical element (DOE) or diffraction grating directs...
laser spark spectroscopy
A method of analysis in which a pulsed laser beam is used to heat a particle, producing a plasma, or laser spark. As the...
functional near-infrared spectroscopy
Functional near-infrared spectroscopy (fNIRS) is a non-invasive neuroimaging technique that measures changes in hemoglobin...
self-absorption
In optical emission spectroscopy, the reduction in radiant power in the central portion of spectral lines arising from the...
ultraviolet photoemission spectroscopy
A technique for measuring the energy spectrum of electrons emitted during the absorption of ultraviolet radiation. This...
laser crystal
A laser crystal, also known as an active medium or gain medium, is a solid-state material used in the construction of...
q-switched operation
Q-switched operation, or q-switching, is a technique used in lasers to produce short and intense pulses of light. The term...
resonance ionization spectroscopy
A type of ultrasensitive laser spectroscopy that can detect quantities as small as a single atom of some substances and that...
linear image sensor
A linear image sensor is a type of solid-state electronic device used to capture and convert light into electrical signals....
picosecond spectroscopy
A method of measuring complex sequential photosynthetic reactions by varying the pulse time and wavelength of light...
mid-infrared camera
A mid-infrared camera is a type of imaging device designed to capture images in the mid-infrared (mid-IR) spectral range,...
infrared
Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but...
spectrographic electrode
The hollow electrode used in emission spectroscopy to hold the material to be examined and, using an arc or spark source, to...
single-photon-decay spectroscopy
A technique for observing the decay of light emissions from sources following their pulsed excitations, based on recording...
optical density
A measure of the transmittance through an optical medium. Optical density equals the log to the base 10 of the reciprocal of...
germanium crystal
Germanium crystal refers to a crystalline form of the element germanium (Ge), which is a metalloid and semiconductor...
silicon photodiode
A silicon photodiode is a semiconductor device that converts light into an electrical current. It is a type of photodetector...

(180 results found)

Explore Our Content
News
Features
Latest Products
Webinars
White Papers
All Things Photonics Podcast
Videos
Our Summits & Conferences
Industry Events
Bookstore
Join Our Community
Subscribe
Advertise
Become a member
Sign in
Contribute a Feature
Suggest a Webinar
Submit a Press Release
Mobile Apps

About Us
Our Company
Our Publications
Contact Us
Career Opportunities
Teddi C. Laurin Scholarship

Terms & Conditions
Privacy Policy
California Consumer Privacy Act (CCPA)



©2024 Photonics Media
100 West St.
Pittsfield, MA, 01201 USA
[email protected]
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.