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Spectral interferometry (SI) or frequency-domain interferometry is a linear technique used to measure optical pulses, with the condition that a reference
Spectral_interferometry
domain based on spectral shearing interferometry. Spectral shearing interferometry is similar in concept to lateral shearing interferometry, except the shearing
Spectral phase interferometry for direct electric-field reconstruction
Spectral_phase_interferometry_for_direct_electric-field_reconstruction
Measurement method using interference of waves
Interferometry is a technique which uses the interference of superimposed waves to extract information. Interferometry typically uses electromagnetic waves
Interferometry
Imaging technique
depth-resolved images of biological tissue or other scattering media. It uses interferometry techniques to detect the amplitude and time-of-flight of reflected light
Optical_coherence_tomography
Form of radar used to create images of landscapes
and deforestation. Volcano and earthquake monitoring use differential interferometry. SAR can also be applied for monitoring civil infrastructure stability
Synthetic-aperture_radar
Measurement technique
name for coherence scanning interferometry in the context of areal surface topography instrumentation that relies on spectrally-broadband, visible-wavelength
White_light_interferometry
Topics referred to by the same term
electrical signals are of sufficient quality Sine integral, Si(x) Spectral interferometry, attosecond physics technique Systems integrator, in engineering
Si
Interferometric technique
Self-mixing or back-injection laser interferometry is an interferometric technique in which a part of the light reflected by a vibrating target is reflected
Self-mixing_interferometry
Effect in signal processing
referred to as spectral leakage in the broadest sense. Sampling, for instance, produces leakage, which we call aliases of the original spectral component.
Spectral_leakage
Laser pulse with duration a picosecond (10^-12 s) or less
direct. Spectral phase interferometry for direct electric-field reconstruction (SPIDER) is a nonlinear self-referencing technique based on spectral shearing
Ultrashort_pulse
codes to achieve Carrier Interference Multiple Access (CIMA) via spectral interferometry mechanisms. Many applications of CI principles were published in
Carrier_interferometry
Kai; Wu, Chi Man Lawrence; Ho, Ho Pui (2013-08-26). "Common-path spectral interferometry with temporal carrier for highly sensitive surface plasmon resonance
Common-path_interferometer
Coherence scanning interferometry (CSI) is any of a class of optical surface measurement methods wherein the localization of interference fringes during
Coherence scanning interferometry
Coherence_scanning_interferometry
Scientific instrument measuring light collimation
shearing interferometer Spectral phase interferometry for direct electric-field reconstruction, a type of spectral shearing interferometry, which is similar
Shearing_interferometer
Multi-wavelength imaging method
identifying materials, or detecting processes. There are three general types of spectral imagers. There are push broom scanners and the related whisk broom scanners
Hyperspectral_imaging
Study involving matter and electromagnetic radiation
radiative energy, and recently gravitational waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave
Spectroscopy
Common configuration for optical interferometry
The Michelson interferometer is a common configuration for optical interferometry and was invented by the American physicist Albert Abraham Michelson in
Michelson_interferometer
related to spectral imaging systems based on interferometry and other spectral imaging instrumentation. The functionalities that Applied Spectral Imaging
Applied_Spectral_Imaging
Telescope in the Atacama Desert, Chile
main VLT telescopes is to operate as four independent telescopes. The interferometry (combining light from multiple telescopes) is used about 20 percent
Very_Large_Telescope
Turkish-American engineer and academic
Institute Thesis Non-destructive characterization tools based on spectral interferometry and minimum phase functions (2005) Doctoral advisor Gordon S. Kino
Aydogan_Ozcan
Optical device with parallel mirrors
that modifies the spectral contents, the spectral intensity distribution inside the resonator would be the same as the incident spectral intensity distribution
Fabry–Pérot_interferometer
Potential for two waves to interfere
optical correlator, frequency-resolved optical gating (FROG), or spectral phase interferometry for direct electric-field reconstruction (SPIDER). Light also
Coherence_(physics)
Proposed space mission
characterize the atmospheres of Earth-like exoplanets using mid-infrared interferometry. The mission concept is based on a formation-flying space interferometer
Large Interferometer For Exoplanets
Large_Interferometer_For_Exoplanets
Brightest star in the constellation Orion
located at a distance of approximately 850 light-years (260 pc). A star of spectral type B8Ia, Rigel is calculated to be anywhere from 61,500 to 363,000 times
Rigel
Binary star in the constellation Scorpius
illuminating the Rho Ophiuchi cloud complex in its foreground. Classified as spectral type M1.5Iab-Ib, Antares is a red supergiant, a large evolved massive star
Antares
Optical imaging method
version of the time-stretch camera, the imaging is combined with spectral interferometry to measure quantitative phase and intensity images in real-time
Serial time-encoded amplified microscopy
Serial_time-encoded_amplified_microscopy
Triple star system in the constellation Eridanus
Eridani A is a main-sequence dwarf of spectral type K0.5, 40 Eridani B is a 9th magnitude white dwarf of spectral type DA4, and 40 Eridani C is an 11th
40_Eridani
nearest stars separated by spectral type. The scope of the list is still restricted to the common main sequence spectral types: M, K, G, F, A, B and
List of nearest stars by spectral type
List_of_nearest_stars_by_spectral_type
Active galactic nucleus (AGN) containing a supermassive black hole
output, which lacked explanation. The small sizes were confirmed by interferometry and by observing how quickly the quasar as a whole varied in output
Quasar
Data acquisition method for earth sciences
different wavelengths are detected, and plotted on a spectral reflectance curve. This spectral fingerprint is governed by the physio-chemical properties
Remote_sensing_in_geology
Transparent optical element with flat, polished surfaces that refract light
their bases, forming a wide vertex angle (~ 180°); used in common-path interferometry. Another class is formed by polarizing prisms which use birefringence
Prism_(optics)
Astronomical experiment
sum of the interferometry fringe patterns. The distance between the peaks of the observed beam is frequency-dependent, so this allows spectral imaging.
Qubic_experiment
Red supergiant star in the constellation Orion
"Speckle Interferometry". New Scientist. Vol. 78. pp. 238–40. Bibcode:1978NewSc..78..238W. Roddier, F. (1999). "Ground-based interferometry with adaptive
Betelgeuse
Brightest star in the constellation Auriga
long baseline interferometry". The Astronomical Journal. 107: 1859. Bibcode:1994AJ....107.1859H. doi:10.1086/116995. See §1 for spectral types, Table 1
Capella
Spectroscopic techniques that measure the absorption of radiation
wavelength can be measured independently. It is also common to employ interferometry to determine the spectrum—Fourier transform infrared spectroscopy is
Absorption_spectroscopy
Stellar classification
main-sequence star is a main-sequence (core hydrogen burning) star of spectral type A. The spectral luminosity class is V. These stars have spectra defined by strong
A-type_main-sequence_star
height measurements of an object using coherence scanning interferometry (CSI) with spectrally-broadband, "white light" illumination. Different configurations
White_light_scanner
"Refined fundamental parameters of Canopus from combined near-IR interferometry and spectral energy distribution". Astronomy & Astrophysics. 654: A19. arXiv:2109
List_of_largest_stars
optical correlator frequency-resolved optical gating (FROG) Spectral phase interferometry for direct electric-field reconstruction (SPIDER) Hong–Ou–Mandel
List of types of interferometers
List_of_types_of_interferometers
Star in the constellation of Draco
"Surveying the Bright Stars by Optical Interferometry. I. A Search for Multiplicity among Stars of Spectral Types F-K". The Astrophysical Journal Supplement
Thuban
Distance over which a propagating wave maintains a certain degree of coherence
distances up to this long coherence length. Tolansky's An introduction to Interferometry has a chapter on sources which quotes a line width of around 0.052 angstroms
Coherence_length
Star in the constellation Ursa Major
(2024-04-26). "An Angular Diameter Measurement of β UMa via Stellar Intensity Interferometry with the VERITAS Observatory". The Astrophysical Journal. 966 (1): 28
Merak_(star)
Function used in signal processing
of the signal by an effect called spectral leakage. Window functions allow us to distribute the leakage spectrally in different ways, according to the
Window_function
Measures fluctuations in the refractive index of air
the structure constant of refractive index fluctuations, which is the spectral amplitude of refractive index fluctuations in the inertial subrange of
Scintillometer
Star in the constellation Canis Major
long baseline interferometry) can be useful. For VY CMa this was achieved in 2008, with observations of H 2O masers using VERA interferometry from the National
VY_Canis_Majoris
Color reproduction capability
fluorescence, reprographics, interferometry, semiconductor inspection, remote detection, optical data storage, image recording, spectral analysis, printing, point-to-point
Gamut
Star in the constellation Ursa Major
Epsilon Ursae Majoris is 81 light-years (25 parsecs) from the Sun. Its spectral type is A1p; the "p" stands for peculiar, as its spectrum is characteristic
Alioth
Wolf–Rayet star in the constellation Dorado
times fainter than the cluster and can only be resolved using speckle interferometry. In 1960, a group of astronomers working at the Radcliffe Observatory
R136a1
Laser source with equal intervals of spectral lines
fundamental of the high-frequency tail, and otherwise it is not. Spectral phase interferometry for direct electric-field reconstruction (SPIDER) measures how
Frequency_comb
Variable star in the constellation Cygnus
parsecs) from Earth, it is a hypergiant luminous blue variable (LBV) star of spectral type B1-2 Ia-0ep that is one of the most luminous stars in the Milky Way
P_Cygni
Type of star
"Maximum-entropy maps of the Be shell star zeta Tauri from optical long-baseline interferometry". Astronomy and Astrophysics. 283: L13. Bibcode:1994A&A...283L..13Q
Shell_star
Star in the constellation Orion
less luminous than a B2 giant. However, direct observations based on interferometry confirm that Bellatrix is not a binary of similar-brightness stars,
Bellatrix
Brightest star in the constellation of Carina
"Refined fundamental parameters of Canopus from combined near-IR interferometry and spectral energy distribution". Astronomy & Astrophysics. 654: A19. arXiv:2109
Canopus
Star in the constellation Libra
(2020-08-01). "Fundamental stellar parameters of benchmark stars from CHARA interferometry - I. Metal-poor stars". Astronomy & Astrophysics. 640: A25. arXiv:2006
HD_140283
Triple star system in the constellation Centaurus
"High-precision elements of double-lined spectroscopic binaries from combined interferometry and spectroscopy. Application to the β Cephei star β Centauri". Astronomy
Beta_Centauri
Topics referred to by the same term
burn Fluid-structure interaction, in fluid dynamics Frequency scanning interferometry, a technique for measuring the distance between two points FRISK Software
FSI
Septuple star system in the constellation Crux
(2010). "Stellar intensity interferometry: Astrophysical targets for sub-milliarcsecond imaging". Optical and Infrared Interferometry II. Proceedings of the
Acrux
Stellar phenomenon
of spots on both stars. For giant binary stars - Very-long-baseline interferometry For stars with transiting extrasolar planets – Light curve variations
Starspot
Imaging systems using changes in phase
imaging (GBI) includes Shearing interferometry or X-ray Talbot interferometry (XTI), and polychromatic far-field interferometry (PFI). Since the first X-ray
Phase-contrast_X-ray_imaging
Star in the constellation Virgo
"Surveying the Bright Stars by Optical Interferometry. I. A Search for Multiplicity among Stars of Spectral Types F-K", The Astrophysical Journal Supplement
Gamma_Virginis
Binary star system in the constellation Cetus
are suggestive.[citation needed] An estimate obtained in 1925 from interferometry by Francis G. Pease at the Mount Wilson Observatory gave Mira a diameter
Mira
ESA Earth observation satellite (2002–2012)
arboriculture, natural hazards, digital elevation modelling (using interferometry), monitoring of maritime traffic, atmospheric dispersion modelling (pollution)
Envisat
Optoelectronics component
larger for devices with lower output power. The spectral ripple is the measure of the variation of the spectral power-density that can be observed for small
Superluminescent_diode
Single yellow-hued star in the constellation Cetus
designation that is Latinized from τ Ceti, and abbreviated Tau Cet or τ Cet. Spectrally, this star is similar to the Sun, although it has only about 78% of the
Tau_Ceti
Property in optics
microscopy, differential interference contrast microscopy (DIC), or interferometry. Zernike phase-contrast microscopy introduces a phase shift to the low
Refractive_index
Star in the constellation Centaurus
case. The supposed companion has been detected directly by optical interferometry, and is approximately one third the size of the hypergiant primary.
HR_5171
Constellation in the southern celestial hemisphere
Structure of the Red Supergiant VY CMa based on VLTI/AMBER spectro-interferometry". Astronomy & Astrophysics. 540: L12. arXiv:1203.5194. Bibcode:2012A&A
Canis_Major
Jovian planet orbiting HR 8799
This was the first direct observation of any exoplanet using optical interferometry. A spectrum ten times more detailed than earlier observations revealed
HR_8799_e
Type of star, larger and brighter than the Sun
Hertzsprung–Russell diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red
Giant_star
System of ten radio telescopes
forms the longest system in the world that uses very long baseline interferometry. The longest baseline available in this interferometer is about 8,611
Very_Long_Baseline_Array
Dispersive optical device
device that, like a prism or a diffraction grating, splits light into its spectral components. The device works almost independently of polarization. In contrast
Virtually_imaged_phased_array
Stars with a supergiant luminosity class with a spectral type of K or M
classified as supergiants on the basis of their spectral luminosity class. This system uses certain diagnostic spectral lines to estimate the surface gravity of
Red_supergiant
Italian physicist
research has involved optical chaos, rogue waves, slow light, holographic interferometry, and pattern formation in nonlinear optics and liquid crystals. At HOASYS
Stefania_Residori
Red supergiant star in the constellation Cepheus
observing conditions. Since 1943, the spectrum of this star has served as a spectral standard by which other stars are classified. Mu Cephei is more than 100
Mu_Cephei
Multiple scattering low coherence interferometry (ms/LCI) is an imaging technique that relies on analyzing multiply scattered light in order to capture
Multiple scattering low coherence interferometry
Multiple_scattering_low_coherence_interferometry
French condensed matter physicist (born 1941)
Grabielle, S.. Herzog, R., Gobert, D., Kaplan, D., « Self-referenced spectral interferometry », Applied Physics B, 2010, vol. 99, no 1-2, p. 7-12 "Décret du
Daniel_Kaplan_(physicist)
Dimensionless number that quantifies the strength of the electromagnetic interaction
methods include the A.C. Josephson effect and photon recoil in atom interferometry. There is general agreement for the value of α, as measured by these
Fine-structure_constant
Optical interferometer on Mount Wilson, California
where they are matched up to within one micron. This process is called interferometry, and allows the array to have the same resolving power as a telescope
CHARA_array
Choice of colors used in design
direction, seasonality, or data from Synthetic Aperture Radar (SAR) interferometry, which is used to display Earth's surface displacement. Cyclic schemes
Color_scheme
Imaging by sections or sectioning using a penetrative wave
Ronald M.; Descour, Michael R. (February 2001). "Computed Tomography-Based Spectral Imaging For Fluorescence Microscopy". Biophysical Journal. 80 (2): 986–993
Tomography
Israeli physicist
astronomy: A co-author of the textbook An Introduction to Optical Stellar Interferometry, Lipson's research interests extended to applying optical techniques
Stephen_Geoffrey_Lipson
Sizes, Radii, and Effective Temperatures of B-type Stars from Optical Interferometry with the CHARA Array". The Astrophysical Journal. 873 (1): 91. Bibcode:2019ApJ
List of stars with resolved images
List_of_stars_with_resolved_images
Star in the constellation Gemini
for Pollux's diameter obtained in 1925 by John Stanley Plaskett via interferometry was 13 million miles (20.9 million km, or 18.5 R☉), significantly larger
Pollux_(star)
British physicist
optics and ultrafast optics, including his development of the spectral phase interferometry for direct electric-field reconstruction (SPIDER) technique
Ian_Walmsley
American astronomer (born 1936)
Wilson / Biographical". My thesis project was to have been hydrogen-line interferometry, but when the first plans for a local oscillator system didn't work
Robert_Woodrow_Wilson
Generic name for a relatively persistent vibration of the ground
subsurface structure at many scales, often using the methods of seismic interferometry; Environmental monitoring, such as in fluvial seismology; and estimating
Seismic_noise
Spectral linewidth of a laser beam
linewidth is the spectral linewidth of a laser beam. Two of the most distinctive characteristics of laser emission are spatial coherence and spectral coherence
Laser_linewidth
Red giant star in the constellation Sagitta
2006), "Tests of stellar model atmospheres by optical interferometry. III. NPOI and VINCI interferometry of the M0 giant γ Sagittae covering 0.5-2.2 μm", Astronomy
Gamma_Sagittae
Compact astronomical body
in its observations of Sagittarius A* and M87*. Gravitational-wave interferometry can be used to detect merging black holes and other compact objects
Black_hole
Star in the constellation Orion
by its rapid rotation. The outer companion A3 is resolved by speckle interferometry at a separation of 0.4″. In addition to the well-known three stars,
Theta2_Orionis
outward. In radio astronomy, this effect can be reduced by using higher spectral resolution (narrower frequency ranges) or adjusting the image reconstruction
Bandwidth_smearing
Star in the constellation Hydra
giant star with a spectral classification of K3 and luminosity class III. The angular diameter has been measured using interferometry, after correction
Alphard
American physicist (1852–1931)
often referred to as "Michelson Stellar Interferometry". This was to distinguish it from speckle interferometry, but should not be confused with the Michelson
Albert_A._Michelson
Astronomical catalog
mainly from the Hipparcos and Tycho catalogues and results from speckle interferometry, as well as other sources. A unique 1–3 letter discovery code is used
Washington Double Star Catalog
Washington_Double_Star_Catalog
Star in the constellation Scutum
on theoretical grounds to be between 7 and 10 M☉. In mid 2012, AMBER interferometry with the Very Large Telescope (VLT) in the Atacama Desert in Chile was
UY_Scuti
Star in the constellation Lacerta
small Lacerta OB1 association. It is a hot blue main-sequence star of spectral type O9V, a massive star that is currently fusing its core hydrogen. It
10_Lacertae
Autocorrelation functions realized in optics
optical gating Multiphoton intrapulse interference phase scan Spectral phase interferometry for direct electric-field reconstruction Roth, J. M., Murphy
Optical_autocorrelation
Multiple star system in the constellation Orion
Orionis A, B and C. Iota Orionis A has also been resolved using speckle interferometry and is also a massive spectroscopic binary, with components Iota Orionis
Iota_Orionis
1185L. doi:10.1051/0004-6361:20030181. "Externally Dispersed Interferometry". SpectralFringe.org. LLNL/SSL. June 2006. Retrieved 6 December 2009. D.J
Methods of detecting exoplanets
Methods_of_detecting_exoplanets
Red dwarf star in the constellation Ophiuchus
terrestrial planets were always going to be difficult to detect. NASA's Space Interferometry Mission, which was to begin searching for extrasolar Earth-like planets
Barnard's_Star
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
Girl/Female
Bengali, Indian, Telugu
Special
Girl/Female
Arabic, Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Sindhi, Tamil, Telugu
Special
Girl/Female
Indian, Telugu
Special
Boy/Male
Hindu, Indian
Special
Girl/Female
Hindu, Indian, Tamil
Special
Girl/Female
Indian
Special
Girl/Female
Tamil
Special
Boy/Male
Hindu, Indian
Special
Boy/Male
Hindu, Indian
Special
Girl/Female
Indian
Special
Girl/Female
Bengali, Indian, Telugu
Special
Boy/Male
Indian
Special
Boy/Male
Indian, Telugu
Special
Girl/Female
Greek, Indian, Marathi, Turkish
Special
Boy/Male
Tamil
Special
Girl/Female
Hindu, Indian, Tamil
Special
Girl/Female
Hindu, Indian, Tamil
Special
Boy/Male
Tamil
Saisnigda | ஸாஈஸà¯à®¨à¯€à®•à¯à®¤à®¾
Special
Saisnigda | ஸாஈஸà¯à®¨à¯€à®•à¯à®¤à®¾
Boy/Male
Hindu
Special
Girl/Female
Bengali, Indian, Modern
Special
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
Boy/Male
Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Rajasthani, Sindhi, Tamil, Telugu, Traditional
A Place Where Lord Krishna was Brought Up
Male
English
Short form of English Rodger, RODGE means "famous spear."
Girl/Female
Biblical
Integrity, truth, a nurse.
Surname or Lastname
English (Staffordshire)
English (Staffordshire) : unexplained.
Surname or Lastname
English
English : variant of or patronymic from Meader.
Boy/Male
Latin
meaning from France, or free one.
Biblical
building me; my understanding
Girl/Female
Tamil
Jyotika | ஜà¯à®¯à¯‹à®¤à®¿à®•à®¾
Light, A flame
Girl/Female
Indian, Sanskrit, Telugu
Lord Surya / Sun
Boy/Male
Australian, British, Danish, Dutch, English, Finnish, German, Hebrew
The Lord is Salvation
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
SPECTRAL INTERFEROMETRY
n.
A medicine for diseases of the chest organs, especially the lungs.
n.
An apparition; a specter.
a.
Appropriate; designed for a particular purpose, occasion, or person; as, a special act of Parliament or of Congress; a special sermon.
a.
Of or pertaining to a specter; ghosty.
n.
A breastplate, esp. that worn by the Jewish high person.
a.
Having the breast conspicuously colored; as, the pectoral sandpiper.
n.
One appointed for a special service or occasion.
n.
A luminous appearance, or an image seen after the eye has been exposed to an intense light or a strongly illuminated object. When the object is colored, the image appears of the complementary color, as a green image seen after viewing a red wafer lying on white paper. Called also ocular spectrum.
a.
Of or pertaining to the spectrum; made by the spectrum; as, spectral colors; spectral analysis.
pl.
of Spectrum
n.
The several colored and other rays of which light is composed, separated by the refraction of a prism or other means, and observed or studied either as spread out on a screen, by direct vision, by photography, or otherwise. See Illust. of Light, and Spectroscope.
adv.
In the form or manner of a specter.
a.
Limited in range; confined to a definite field of action, investigation, or discussion; as, a special dictionary of commercial terms; a special branch of study.
n.
The tarsius, or spectral lemur.
n.
A covering or protecting for the breast.
a.
Of or pertaining to a sector; as, a sectoral circle.
a.
Relating to, or good for, diseases of the chest or lungs; as, a pectoral remedy.
a.
Of or pertaining to the breast, or chest; as, the pectoral muscles.
n.
A clasp or a cross worn on the breast.
a.
Of or pertaining to a scepter; like a scepter.