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Laser source with equal intervals of spectral lines
A frequency comb or spectral comb is represented by a spectrum made of discrete, stable and regularly spaced spectral lines. In optics, a frequency comb
Frequency_comb
Optical frequency combs
Kerr frequency combs (also known as microresonator frequency combs) are optical frequency combs which are generated from a continuous wave pump laser by
Kerr_frequency_comb
Signal processing filter
itself, causing constructive and destructive interference. The frequency response of a comb filter consists of a series of regularly spaced notches in between
Comb_filter
Periodic distribution ("function") of "point-mass" Dirac delta sampling
In mathematics, a Dirac comb (also known as sha function, impulse train or sampling function) is a periodic generalized function with the formula Ш T
Dirac_comb
Toothed device used for styling, cleaning and managing hair and scalp
the resonating frequency of the oral cavity. This was the inspiration for the kazoo, a membranophone. The comb is also a lamellophone. Comb teeth have harmonic
Comb
Measurement method using interference of waves
locking of the frequency comb output to an atomic standard can be performed in a single step. To measure an unknown frequency, the frequency comb output is
Interferometry
Digital signal sample rate converter
integrator–comb (CIC) is a computationally efficient class of low-pass finite impulse response (FIR) filter that chains N number of integrator and comb filter
Cascaded integrator–comb filter
Cascaded_integrator–comb_filter
Type of frequency comb
An astro-comb is a type of frequency comb used in observational astronomy to increase the accuracy of wavelength calibration in spectrographs. The increased
Astro-comb
Signal generator that produces multiple harmonic outputs
of a comb, gave the device its name. Comb generators find wide range of uses in microwave technology. E.g., synchronous signals in wide frequency bandwidth
Comb_generator
German physicist (born 1941)
development of laser-based precision spectroscopy, including the optical frequency comb technique", sharing the prize with John L. Hall and Roy J. Glauber.
Theodor_W._Hänsch
Type of atomic clock
transition frequency. Oscillations of light in the optical range are counted using a frequency comb. The development of femtosecond frequency combs and optical
Optical_clock
Numerical model of nonlinear optical systems
longitudinal patterns is intrinsically linked to the phenomenon of "Kerr frequency combs" in microresonators, discovered in 2007 by Tobias Kippenberg and collaborators
Lugiato–Lefever_equation
Method in numerical analysis
gaining a lot of traction since the 2010s is the simulation of Kerr frequency comb dynamics in optical microresonators. The relative ease of implementation
Split-step_method
Auxiliary scale of a measurement device, used to increase precision
spectroscopy that is especially sensitive to trace gases. The method uses a frequency-comb laser combined with a high-finesse optical cavity to produce an absorption
Vernier_scale
many applications. In the frequency domain, a pulse train is represented by a frequency comb. Here, the carrier-envelope frequency f C E O = 1 T C E O = d
Carrier-envelope_phase
Photonic systems which use silicon as an optical medium
optical parametric amplification, parametric wavelength conversion, and frequency comb generation., Kerr nonlinearity can also cause modulational instability
Silicon_photonics
spectroscopy that is especially sensitive to trace gases. The method uses a frequency comb laser combined with a high finesse optical cavity to produce an absorption
Vernier_spectroscopy
American physicist
co-author (with Jun Ye) of the standard reference for frequency combs titled Femtosecond Optical Frequency Comb: Principle, Operation and Applications. Cundiff's
Steven_Cundiff
German physicist in New Zealand
facilitate nonlinear interactions. He uses these to generate optical frequency combs and to coherently convert between microwave and optical photons. Born
Harald_Schwefel
Clock that monitors the resonant frequency of atoms
which has a much higher frequency than that of microwaves; while optical frequency comb measures highly accurately such high frequency oscillation in light
Atomic_clock
Type of laser
prize for physics in 2005 was awarded to the development of the optical frequency comb technique, which heavily relied on the Ti:sapphire laser and its self-modelocking
Titanium-sapphire_laser
American physicist (born 1934)
pioneering work on laser-based precision spectroscopy and the optical frequency comb technique. The other half of the prize was awarded to Roy J. Glauber
John_L._Hall
SI unit of frequency
Optical frequency standard based on a single trapped ion (archived 23 December 2013) National Research Council of Canada: Optical frequency comb (archived
Hertz
Israeli-Swiss engineering company
analysis instruments on Mars rovers. In 2017, the firm introduced QCL frequency combs commercially. "Corporate Profile". Alpes Lasers S.A. Retrieved April
Alpes_Lasers
development of laser-based precision spectroscopy, including the optical frequency comb technique." Theodor W. Hänsch Germany 2006 John C. Mather United States
List of Nobel laureates in Physics
List_of_Nobel_laureates_in_Physics
Optical spectroscopic technique
coverage. Recent efforts have demonstrated the use of broadband laser frequency comb sources for significantly broader spectral coverage. If a light-absorbing
Cavity_ring-down_spectroscopy
Echelle spectrograph on ESO VLT, Chile
the stability and calibration accuracy that are now possible by laser frequency comb technology. The requirement is to reach 10 cm/s, but the aimed goal
ESPRESSO
Time standard based on atomic clocks
History of time scales NIST-F1 Cesium Fountain Atomic Clock "Optical frequency comb for metrology and timekeeping". Archived from the original on 25 January
International_Atomic_Time
Continuous (non-quantized) quantities in quantum information science
implementation, 60 modes were simultaneously entangled in the frequency domain, in the optical frequency comb of an optical parametric oscillator. Another proposal
Continuous-variable quantum information
Continuous-variable_quantum_information
Analytical method
used. For high precision spectroscopy, wavelength-scanned lasers and frequency combs have recently become powerful sources, albeit with sometimes longer
Near-infrared_spectroscopy
Phenomenon in nonlinear optics
generation, modulation transfer spectroscopy, and in microresonator based frequency comb generation. Parametric amplifiers and oscillators based on four-wave
Four-wave_mixing
Wave that can travel around a concave surface
applications as optical resonators for lasing, optomechanical cooling, frequency comb generation and optical sensing. The light waves are guided around almost
Whispering-gallery_wave
Dispersive optical device
fields and devices, such as high-resolution WDM (Weiner, 2004), a laser frequency comb (Diddams, 2007), a spectrometer (Nugent-Glandorf, 2012), astrophysical
Virtually_imaged_phased_array
Extremely accurate clock concept
metrology". With the development (around 2000) of the frequency comb for measuring optical frequencies exactly, a nuclear optical clock based on 229m Th was
Nuclear_clock
Baseband analog video signal format
the frequency domain. The signals may be separated using a comb filter. In other words, the combination of luma and chrominance is indeed a frequency-division
Composite_video
Type of display technology
spectral shaping of optical frequency combs to create multiple pulse trains. For example, a 10 GHz optical frequency comb was shaped by the POP to generate
Liquid_crystal_on_silicon
American physicist
Hall He carries out experimental research in the fields of optical frequency combs, precision spectroscopy, nonlinear optics, microwave photonics and
Scott_Diddams
Research institute in Germany
laser-based precision spectroscopy, including the optical frequency comb technique". The frequency comb the Nobel Prize is referring to has been developed in
Max Planck Institute of Quantum Optics
Max_Planck_Institute_of_Quantum_Optics
American physicist (born 1970)
Y. Okawachi, A. L. Gaeta, M. Lipson, "Battery-operated integrated frequency comb generator". Nature. 562, 401 (2018). A. Dutt, C. Joshi, X. Ji, J. Cardenas
Michal_Lipson
Swiss company
The spectroscopy is based on semiconductor quantum cascade laser frequency combs in the mid-infrared wavelength range. The company is based in Zurich
IRsweep
French molecular and laser physicist
working at the Max Planck Institute of Quantum Optics in the field Frequency Combs, where she studies ultra-high resolution spectroscopy using ultrashort
Nathalie_Picqué
Extraction of a signal from an optical fiber
"Stealth and secured optical coherent transmission using a gain switched frequency comb and multi-homodyne coherent detection". Optics Express. 29 (24): 40462–40475
Fiber_tapping
Nonlinear optical process
a phase- and frequency-locked down-conversion process for generation of mid-infrared frequency combs using near-infrared frequency combs, and a conversion
Half-harmonic_generation
Device that emits light via optical amplification
produce an output spectrum composed of hundreds of evenly spaced peaks: a frequency comb. The spacing of the whispering gallery modes is directly related to
Laser
German physicist
a research team on microphotonics and microresonator-based optical frequency combs. In 2020, Del'Haye moved to the Max Planck Institute for the Science
Pascal_Del'Haye
American physicist
her development of optical frequency combs and their applications in remote sensing of air pollution and in time and frequency transfer, the process of
Laura_C._Sinclair
Chemical element with atomic number 70 (Yb)
Hayes D (April 2010). "Entanglement of Atomic Qubits Using an Optical Frequency Comb". Physical Review Letters. 104 (14) 140501. arXiv:1001.2127. Bibcode:2010PhRvL
Ytterbium
South Korean scientist (born 1965)
so-called frequency comb, whose repetition and carrier-envelop-offset frequencies are stabilized using a standard reference atomic clock frequency in the
Cho_Minhaeng
New Zealand physicist
exploring microresonator frequency comb architecture. Coen, Stéphane; Erkintalo, Miro (2013). "Universal scaling laws of Kerr frequency combs". Optics Letters
Miro_Erkintalo
Chinese-American physicist
APS in 2007 five Gold Medals from the US Department of Commerce: for frequency combs (2001), ultracold molecules (2011), atomic clocks (2014, 2019, and
Jun_Ye
Electrical engineer
College Park. His research considers ultra-pure microwaves and Kerr frequency combs. He is a Fellow of The Optical Society and SPIE. Chembo was born in
Yanne_Chembo
contributions to the development of laser-based precision spectroscopy, including the optical frequency comb technique" Theodor W. Hänsch (b. 1941) German
2005_Nobel_Prizes
Type of quantum state
Olivier (September 22, 2008). "One-Way Quantum Computing in the Optical Frequency Comb". Physical Review Letters. 101 (13): 13501. arXiv:0804.4468. Bibcode:2008PhRvL
Squeezed_coherent_state
University in Pittsburgh, Pennsylvania, US
pioneering work on laser-based precision spectroscopy and the optical frequency comb technique.[citation needed] Neutron scattering – Clifford G. Shull was
Carnegie_Mellon_University
development of laser-based precision spectroscopy, including the optical frequency comb technique." 2007 Peter Grünberg 18 May 1939 in Plzeň, Protectorate of
List of German Nobel laureates
List_of_German_Nobel_laureates
Way to produce very short laser bursts
electronically. Disk laser Dissipative soliton Femtotechnology Fiber laser Frequency comb Laser construction Q-switching Saturable absorption Solid state laser
Mode_locking
American astronomical instrument
goal to achieve 10 cm/s radial velocity precision. It uses a laser frequency comb to calibrate the primary wavelength for EXPRES. ESPRESSO spectrograph
EXPRES
Physics laboratory in Colorado
created at JILA by Eric Cornell and Carl Wieman in 1995. The first frequency comb demonstration was led by John L. Hall at JILA. The first demonstrations
JILA
List of energies required to remove successive electrons from each atom
Eikerna, K.S.E. (April 8, 2010) [August 2, 2010]. "Extreme Ultraviolet Frequency Comb Metrology". Physical Review Letters. 105 (6) 063001. Amsterdam (published
Ionization energies of the elements (data page)
Ionization_energies_of_the_elements_(data_page)
Information method in electromagnetic radiation
in the resulting difference frequency itself, making a virtual 1D array on a single element detector. If the frequency comb is evenly spaced then, conveniently
Optical_heterodyne_detection
Canadian physicist
Baumann, Esther (2019-12-06). "20 years of developments in optical frequency comb technology and applications". Communications Physics. 2 (1): 153. arXiv:1909
Tara_Fortier
development of laser-based precision spectroscopy, including the optical frequency comb technique", sharing the prize with John L. Hall and Roy J. Glauber.
List_of_agnostics
parts. Theodor W. Hänsch (1941–) Physicist ? Developed an optical "frequency comb synthesiser", which makes it possible, for the first time, to measure
List of Heidelberg University people
List_of_Heidelberg_University_people
Laser pulse with duration a picosecond (10^-12 s) or less
stability. Attosecond chronoscopy Bandwidth-limited pulse Femtochemistry Frequency comb Medical imaging: Ultrashort laser pulses are used in multiphoton fluorescence
Ultrashort_pulse
Indirect method for finding extrasolar planets and brown dwarfs
[permanent dead link] "GJ 581 c". Exoplanets Data Explorer. "An NIR laser frequency comb for high precision Doppler planet surveys". Chinese Academy of Sciences
Doppler_spectroscopy
Type of atomic clock
including ultra-stable lasers, vacuum chambers, laser cooling systems, and frequency combs. In recent years, portable optical lattice clocks about the size of
Optical_lattice_clock
Infrared microscopy technique
nonlinear difference-frequency generation (DFG). However, the mid-IR spectra in this realization were recorded using dual comb spectroscopy principles
Nano-FTIR
Transmitting information over optical fiber
Toshio; Oxenløwe, Leif K. (2018-07-02). "Single-source chip-based frequency comb enabling extreme parallel data transmission" (PDF). Nature Photonics
Fiber-optic_communication
Optica prize for quantum electronics
control, generation and line-by-line manipulation of frequency combs, and ultrabroadband radio-frequency photonics." 2022 Girish Saran Agarwal "For discoveries
Charles_Hard_Townes_Award
American chemical engineer
to improve optical device performance for Raman lasers, frequency comb generation, and frequency switchable devices. She invented a photo-responsive material
Andrea_Armani
Type of recurrent neural network with random and non-trainable internal structure
(2013-12-15). "Wavelength-multiplexed quantum networks with ultrafast frequency combs". Nature Photonics. 8 (2): 109–112. arXiv:1307.1216. doi:10.1038/nphoton
Reservoir_computing
Semiconductor diode producing short impulses
generators Local oscillators Voltage-controlled oscillator frequency synthesizers Frequency multiplier Comb generator Sampling phase detector Minority carrier
Step_recovery_diode
Free-space optical communication Frequency Addition Source of Optical Radiation Frequency agility Frequency comb Frequency-resolved optical gating Fuser
List_of_laser_articles
Atom of helium
J. Pinkert; W. Ubachs; K. S. E. Eikema (2010). "Extreme Ultraviolet Frequency Comb Metrology". Phys. Rev. Lett. 105 (6) 063001. arXiv:1004.5110. Bibcode:2010PhRvL
Helium_atom
developed. A superior quantum computer test is developed. An optical frequency comb is devised. The concept of Quantum Darwinism is supported. Hybrid qubit
Timeline of quantum computing and communication
Timeline_of_quantum_computing_and_communication
"Carrier-Envelope Phase Control of Femtosecond Mode-Locked Lasers and Direct Optical Frequency Synthesis". Science. 288 (5466): 635–639. Bibcode:2000Sci...288..635J
List_of_Bell_Labs_alumni
Italian physicist (1944-)
longitudinal LLE describes very accurately the phenomenon of Kerr frequency combs (KFC) in microresonators, discovered in 2007 by Tobias Kippenberg and
Luigi_Lugiato
Swiss physicist
Keller’s earlier research into carrier envelope phase stabilization and frequency comb technology was integral to Theodor W. Hänsch and John L. Hall’s development
Ursula_Keller
Branch of machine learning
transfer through wavelength division multiplexing in conjunction with frequency combs, and (2) extremely high data modulation speeds. Their system can execute
Deep_learning
Thermodynamically open system which is not in equilibrium
the Lugiato–Lefever equation to microresonator-based soliton Kerr frequency combs". Philosophical Transactions of the Royal Society A: Mathematical,
Dissipative_system
Distance over which a propagating wave maintains a certain degree of coherence
exceeding 100 km. Similar coherence lengths can be reached with optical frequency combs due to the narrow linewidth of each tooth. Non-zero visibility is present
Coherence_length
List of some notable people who have lived in the U.S. State of Colorado
Nobel laureate in Physics for precision spectroscopy and the optical frequency comb technique Deborah S. Jin (born 1968) – physicist; created the first
List_of_people_from_Colorado
American electrical engineer, educator and researcher
(2011). "Spectral line-by-line pulse shaping of on-chip microresonator frequency combs". Nature Photonics. 5 (12): 770–776. arXiv:1103.2330. Bibcode:2011NaPho
Andrew_M._Weiner
Chemical compound
D.; Aspelmeyer, M.; Okumura, M.; Ye, J. (27 October 2016). "Direct frequency comb measurement of OD + CO -> DOCO kinetics". Science. 354 (6311): 444–448
Hydrocarboxyl
Grünberg 1994: STED microscopy by Stefan Hell and Jan Wichmann 1998: Frequency comb by Theodor W. Hänsch Late 18th century: German idealism by Immanuel
List of German inventions and discoveries
List_of_German_inventions_and_discoveries
Audio effect
milliseconds. This produces a swept comb filter effect: peaks and notches are produced in the resulting frequency spectrum, related to each other in a
Flanging
Scientist and educator
atmospheric and aerosol chemistries), quantum timing devices (on-chip optical frequency comb–based systems), and quantum-regime X-ray emission technologies. His
Sergio_Carbajo
Structure formed by reflecting faces
strong light confinement, leading to the generation of microresonator frequency combs, low-power parametric processes such as down-conversion, second-harmonic
Optical_microcavity
Parametric oscillator that oscillates at optical frequencies
frequencies. It converts an input laser wave (called "pump") with frequency ω p {\displaystyle \omega _{p}} into two output waves of lower frequency (
Optical_parametric_oscillator
Branch of mathematics
then re-synthesize the same sound by mixing purely harmonic sounds with frequency components as revealed in the Fourier analysis. In mathematics, the term
Fourier_analysis
different frequency, one of them will resonate at a time, according to the input frequency. The magnets are conveniently constructed as a single iron 'comb' of
Vibration_galvanometer
Measurement of a signal at discrete time intervals
delta functions is called a Dirac comb. Mathematically, the modulated Dirac comb is equivalent to the product of the comb function with s ( t ) {\displaystyle
Sampling_(signal_processing)
US physicist
Miller, Johanna (18 August 2011). "Scalable entanglement in an optical frequency comb". Physics Today. AIP Publishing LLC. doi:10.1063/PT.4.0337. List of
Olivier_Pfister
Medical diagnostic method
doi:10.3390/s91008230 Thorpe et al. (2008). "Cavity-enhanced optical frequency comb spectroscopy: application to human breath analysis" Optics Express,
Breath_diagnostics
Research centre at Otago University in New Zealand
development of microresonator frequency combs based on small crystals used to store and transform laser light into different frequencies. Erkintalo received the
Dodd-Walls_Centre
Chemical compound
the material platform for the generation of supercontinuum and Kerr frequency combs in waveguides and optical ring resonators. Through the addition of
Tantalum_pentoxide
Picqué For pioneering broadband molecular spectroscopy with interfering frequency combs. 2023 Stephan Schlemmer For pioneering ultra-sensitive action spectroscopy
William F. Meggers Award in Spectroscopy
William_F._Meggers_Award_in_Spectroscopy
achieved. One such method is Vernier Spectroscopy, which employs a frequency comb laser to excite many cavity modes simultaneously and allows for a highly
Laser_absorption_spectrometry
Swiss physicist
Gisin, Nicolas (2009-05-21). "Multimode quantum memory based on atomic frequency combs". Physical Review A. 79 (5) 052329. arXiv:0805.4164. doi:10.1103/PhysRevA
Nicolas_Gisin
Visual artifact present in composite video signals
reaches well into the band of frequencies used by the luminance signal in the composite video signal. This causes high-frequency chrominance detail at color
Dot_crawl
FREQUENCY COMB
FREQUENCY COMB
Surname or Lastname
English (most frequent in northern Ireland)
English (most frequent in northern Ireland) : from Middle English fe(i)th ‘belief (especially Christian belief)’, ‘faithfulness’, ‘loyalty’. This may have been a nickname for a trustworthy person, but was more probably bestowed on one who used ‘Faith!’ frequently as a mild oath or exclamation.
Surname or Lastname
Swedish (also frequent in Finland)
Swedish (also frequent in Finland) : ornamental name from an unexplained first element + the suffix -lin or -in, common suffixes of surnames.French (Hélin) : from a pet form of Hélie (see Helie 1).French (Hélin) : from the Germanic personal name Heilin, a short form of any of various compound names with the first element heil (see Heilmann 2).English : variant of Hillian.
Boy/Male
English American Shakespearean
Derived from the English place name, meaning Bede's ford. Most frequently used as a surname.
Girl/Female
Arabic, Muslim
Prolific; Frequently Producing
Girl/Female
Arabic, Muslim
One who Remembers God Frequently
Girl/Female
Muslim
One who remembers God frequently
Surname or Lastname
English
English : variant of Postlethwait. This is the more frequent spelling in the British Isles.
Boy/Male
English American
A name beginning with D, also frequently used as an independent name.
Surname or Lastname
English (frequent in eastern England)
English (frequent in eastern England) : ethnic name from Norman French aleman ‘German’ or alemayne ‘Germany’ (Late Latin Alemannus and Alemannia, from a Germanic tribal name that probably originally meant ‘all the men’). In some cases the surname may be from the region of Normandy known as Allemagne (south of Caen), probably named as a Germanic-speaking enclave in a Celtic area in Roman times. In North America, the form Allman has probably absorbed some cases of cognates from other languages, in particular Spanish Aleman and French Alleman.German (Allmann) : variant of Allemann (see Alleman) or in some cases probably an Americanized form of the same name.
Boy/Male
English American
Tile layer, or a. An English surname frequently used as a given name.
Boy/Male
English American
Tile layer, or a. An English surname frequently used as a given name.
Surname or Lastname
English (Devon)
English (Devon) : unexplained. This is a frequent name in OH.
Girl/Female
Latin
Beautiful, loving, lovable.Amabel was used frequently during the Middle Ages and briefly in the...
Girl/Female
Latin American English
Beautiful, loving, lovable.Amabel was used frequently during the Middle Ages and briefly in the...
Girl/Female
Latin
Beautiful, loving, lovable.Amabel was used frequently during the Middle Ages and briefly in the...
Surname or Lastname
English (also frequent in Wales)
English (also frequent in Wales) : patronymic from the personal name Watkin.
Surname or Lastname
English (Dorset)
English (Dorset) : unexplained. This name is frequent in Nova Scotia.
Surname or Lastname
English
English : variant spelling of Byerly. In England this is the more frequent spelling.
Surname or Lastname
English
English : unexplained. Perhaps a variant of Newborn. This name occurs frequently in NC.
Girl/Female
Latin English
Beautiful, loving, lovable.Amabel was used frequently during the Middle Ages and briefly in the...
FREQUENCY COMB
FREQUENCY COMB
Boy/Male
Hindu
Happy
Boy/Male
Tamil
Nirankar | நிரஂகார
With no shape (God)
Girl/Female
Hindu
It is a name of a flower. it is a white small delicate flower with nice scent
Girl/Female
American, Australian, Latin
Offering; Pig; Roman Clan Name; A Gift
Boy/Male
Hindu
Very dedicated, Sharp
Boy/Male
Hindu
Boy/Male
Hindu, Indian, Tamil, Telugu
Eyes; Beautiful Man
Male
Hebrew
(×ªÖ¼Öµ×™×žÖ¸× Ö´×™) Hebrew name TEYMENIY means "from Teman" or "southerner." In the bible, this is the name of a son of Ashur.
Girl/Female
Arabic, Hindu, Indian, Kannada, Malayalam, Marathi, Muslim, Sanskrit, Telugu
Snowed
Boy/Male
Indian
God of Yoga; Source of Knowledge; Lord Krishna; Lord Shiva
FREQUENCY COMB
FREQUENCY COMB
FREQUENCY COMB
FREQUENCY COMB
FREQUENCY COMB
adv.
Frequently; often.
n.
The state of rarely occuring; uncommonness; rareness; as, the infrquence of his visits.
n.
The condition of returning frequently; occurrence often repeated; common occurence; as, the frequency of crimes; the frequency of miracles.
n.
Commonness; frequency.
a.
Frequent; numerous.
adv.
Frequently; often.
a.
Too frequent.
n.
The state of not being frequented; solitude; isolation; retirement; seclusion.
v. t.
To quote constantly or with great frequency.
v. t.
To frequent; to resort to frequently; to visit pertinaciously or intrusively; to intrude upon.
pl.
of Frequency
adv.
At frequent or short intervals; many times; often; repeatedly; commonly.
adv.
Frequently; often.
n.
A crowd; a throng.
n.
Frequency; abundance.
n.
A crowd; a throng; a concourse.
n.
Often to be met with; happening at short intervals; often repeated or occurring; as, frequent visits.
n.
Frequency.
n.
Frequency.
n.
Infrequency.