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Release of a photon triggered by another
Stimulated emission is the process by which an incoming photon of a specific frequency can interact with an excited atomic electron (or other excited
Stimulated_emission
Device that emits light via optical amplification
on the stimulated emission of electromagnetic radiation. The word laser originated as an acronym for light amplification by stimulated emission of radiation
Laser
Device for producing coherent EM waves in the sub-visible spectrum
(microwaves) through amplification by stimulated emission. The term is an acronym for microwave amplification by stimulated emission of radiation. Nikolay Basov
Maser
Technique in fluorescence microscopy
Stimulated emission depletion (STED) microscopy is one of the techniques that make up super-resolution microscopy. It creates super-resolution images
STED_microscopy
Device that emites acoustic radiation
Sound amplification by stimulated emission of radiation (SASER) refers to a device that emits acoustic radiation. It focuses sound waves in a way that
Sound amplification by stimulated emission of radiation
Sound_amplification_by_stimulated_emission_of_radiation
When a system has more excited-state members than ground-state
phase and direction as the "stimulating" photon, and is called stimulated emission. The rate at which stimulated emission occurs is proportional to the
Population_inversion
Phenomenon in solid-state physics of semiconductors
photodiodes, solar cells and other semiconductor photodetectors, while stimulated emission is the principle of operation in laser diodes. Besides light excitation
Carrier generation and recombination
Carrier_generation_and_recombination
Semiconductor laser
generated in the form of an emitted photon. This is spontaneous emission. Stimulated emission can be produced when the process is continued and further generates
Laser_diode
Hypothetical device
concentration of resonant excited (isomeric) nuclear states for collective stimulated emission to occur turns on the broadening of the gamma-ray spectral line.
Gamma-ray_laser
Quantum mechanical state change
via spontaneous emission, then during continuous operation work by stimulated emission. Albert Einstein discussed spontaneous emission in a series of papers
Spontaneous_emission
Type of light that can be emitted by an optical amplifier
spontaneous emission (ASE) or superluminescence is light, produced by spontaneous emission, that has been optically amplified by the process of stimulated emission
Amplified spontaneous emission
Amplified_spontaneous_emission
Type of gas laser
choice for most He-Ne lasers. However, other visible and infrared stimulated-emission wavelengths are possible, and by using mirror coatings with their
Helium–neon_laser
Device that amplifies an optical signal
of optical amplifiers. In doped fiber amplifiers and bulk lasers, stimulated emission in the amplifier's gain medium causes amplification of incoming light
Optical_amplifier
Quantities describing probability of absorption or emission of light
and the Einstein B coefficients are related to the absorption and stimulated emission of light. Throughout this article, "light" refers to any electromagnetic
Einstein_coefficients
Process of copying a quantum state with no modification of the original
realize this type of cloning machine physically by using photon stimulated emission. The concept relies on the property of certain three-level atoms
Quantum_cloning
German-born theoretical physicist (1879–1955)
wrote a paper which introduced the concepts of spontaneous emission and stimulated emission, the latter of which is the core mechanism behind the laser
Albert_Einstein
Laser using electron beam in vacuum as gain medium
employs relativistic electrons as a gain medium instead of using stimulated emission from atomic or molecular excitations. In an FEL, a bunch of electrons
Free-electron_laser
Phenomenon where a solid can emit gases
Mechanically stimulated gas emission (MSGE) is a complex phenomenon embracing various physical and chemical processes occurring on the surface and in
Mechanically stimulated gas emission
Mechanically_stimulated_gas_emission
referred to as a gaser, graser, or glaser, is a hypothetical device for stimulated emission of coherent gravitational radiation or gravitons, much in the same
Gravity_laser
Branch of electronics involving optics
photoresistors photoconductive camera tubes charge-coupled imaging devices Stimulated emission, used in: injection laser diodes quantum cascade lasers Lossev effect
Optoelectronics
Type of ultraviolet laser important in chip manufacturing and eye surgery
report, H.A. Koehler et al. presented a better substantiation of stimulated emission in 1972, using high pressure xenon gas. Definitive evidence of a
Excimer_laser
Series of techniques in optical microscopy
techniques. In 1986, a super-resolution optical microscope based on stimulated emission was patented by Okhonin. Photon tunneling microscopy (PTM) provides
Super-resolution_microscopy
Source of optical gain in a laser
source of optical gain within a laser. The gain results from the stimulated emission of photons through electronic or molecular transitions to a lower
Active_laser_medium
Laser technology
Self-amplified spontaneous emission (SASE) is a process within a free-electron laser (FEL) by which a laser beam is created from a high-energy electron
Self-amplified spontaneous emission
Self-amplified_spontaneous_emission
Elementary particle or quantum of light
{\displaystyle B_{ij}} is the rate constant for emissions in response to ambient photons (induced or stimulated emission). In thermodynamic equilibrium, the number
Photon
Semen discharge from the male reproductive tract
achieved sufficient stimulation for the man to reach orgasm, ejaculation begins. The initial stage of ejaculation, called emission, is controlled by a
Ejaculation
Non-linear optical imaging modality
pulse durations than TPA. Pump–probe microscopy can also measure stimulated emission. In this case, the pump beam drives the electron to an excited state
Pump–probe_microscopy
4Pi-STED-microscope is the result of combining the two unrelated concepts of Stimulated emission depletion (STED) microscopy and 4Pi-microscopy. Here, a fluorescent
4Pi_STED_microscopy
Spontaneous sleep orgasm
A nocturnal emission or sleep orgasm is a spontaneous occurrence during sleep of ejaculation and orgasm for a male, and vaginal lubrication and/or orgasm
Nocturnal_emission
Imaging technique using induced gamma rays
Neutron stimulated emission computed tomography (NSECT) uses induced gamma emission through neutron inelastic scattering to generate images of the spatial
Neutron stimulated emission computed tomography
Neutron_stimulated_emission_computed_tomography
Topics referred to by the same term
amplification of power (gain) of waves passing through (usually by stimulated emission) Optical medium, in physics, a material through which electromagnetic
Medium
Anything that causes a sexual response
a sexual organ (penis or clitoris) is stimulated. The purpose of sex toys is to provide pleasure and stimulation through an alternative route than just
Sexual_stimulation
Type of laser
free-electron laser, which, strictly speaking, uses stimulated Compton scattering instead of stimulated emission. Other approaches to optically induced coherent
X-ray_laser
Laser fundamental design principles
produced by spontaneous emission, is reflected by the mirrors back into the medium, where it may be amplified by stimulated emission. The light may reflect
Laser_construction
Laser that uses surface plasmon polaritons
word spaser is an acronym for "surface plasmon amplification by stimulated emission of radiation". The first such devices were announced in 2009 by three
Spaser
Emission of light by a substance that has absorbed light
photons in the same direction and at the same wavelength, creating stimulated emission. When a portion of the spontaneous fluorescence is trapped between
Fluorescence
Input power level at which a laser generates light primarily by stimulated emission
level at which a laser's output is dominated by stimulated emission rather than by spontaneous emission. Below the threshold, the laser's output power
Lasing_threshold
Substance added to material to alter its properties
be produced, and this population inversion is essential for the stimulated emission of photons in the operation of all lasers. In the case of the natural
Dopant
Natural source of microwave radiation emission
occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular
Astrophysical_maser
Spectral density of light emitted by a black body
decrease due to absorption and the increase due to stimulated emission. Stimulated emission is emission by the material body which is caused by and is proportional
Planck's_law
Hypothetical elementary particle that mediates gravity
interference or beating effects after a delay line) signatures of stimulated emission or absorption of gravitons with present-day technology. Observations
Graviton
Microscope that uses visible light
field scanning optical microscopy which uses evanescent waves, and stimulated emission depletion. In 2005, a microscope capable of detecting a single molecule
Optical_microscope
Spectral linewidth of a laser beam
maser. The acronym MASER stands for "Microwave Amplification by Stimulated Emission of Radiation". More precisely, it was the ammonia maser operating
Laser_linewidth
Romanian-German physicist (born 1962)
department for Medical Physics, where he developed the principle for stimulated emission depletion STED microscopy. From 1993 to 1994 Hell was also for six
Stefan_Hell
Astrophysical maser, source of stimulated spectral line emission
astrophysical maser, which is a naturally occurring source of stimulated spectral line emission. Megamasers are distinguished from other astrophysical masers
Megamaser
Japanese materials scientist (1929–2021)
structures. They achieved stimulated emission from the GaN firstly at room temperature in 1990, and developed in 1995 the stimulated emission at 388 nm with pulsed
Isamu_Akasaki
by stimulated emission through a process of optical amplification. He coined the term LASER for this technology—Light Amplification by Stimulated Emission
History_of_the_Internet
Smallest unit of a chemical element
excited state, an interacting photon with the proper energy can cause stimulated emission of a photon with a matching energy level. For this to occur, the
Atom
Sound from the inner ear
otoacoustic emissions: spontaneous otoacoustic emissions (SOAEs), which occur without external stimulation, and evoked otoacoustic emissions (EOAEs), which
Otoacoustic_emission
Chemical semiconductor compound
discovery of p-type GaN, p–n junction blue/UV-LEDs and room-temperature stimulated emission (essential for laser action). This has led to the commercialization
Gallium_nitride
For the cross section for scattering of a photon by an atomic electron
it was published, explaining the notion of "negative absorption" (stimulated emission), the Thomas–Reiche–Kuhn sum rule, and inelastic scattering — where
Kramers–Heisenberg_formula
Gamma 'bomb' debate, 1997 to 2009
enough of these energetic nuclei needed for stimulated emission, i.e. a gamma-ray laser. While induced emission of a high-energy photon by a lower-energy
Hafnium_controversy
Chemical element with atomic number 68 (Er)
pumped at around 980 or 1480 nm and then radiate light at 1530 nm in stimulated emission. This process results in an unusually mechanically simple laser optical
Erbium
Medical imaging technique
Positron emission tomography (PET) is a functional imaging technique that uses radioactive substances known as radiotracers to visualize and measure changes
Positron_emission_tomography
centrifuge Gas dynamic laser Gas laser Gaser, Gamma Amplification by Stimulated Emission of Radiation Gaussian beam Geoscience Laser Altimeter System Glan–laser
List_of_laser_articles
Application of laser in medical field
laser surgery. The word laser stands for "light amplification by stimulated emission of radiation". The laser was invented in 1960 by Theodore Maiman
Laser_medicine
Metastable excited state of a nuclide
isomers have also been investigated as possible media for gamma-ray stimulated emission. Holmium's nuclear isomer 166m1 67Ho has a half-life of 1,133 years
Nuclear_isomer
Laser pulsing technique
since there is no feedback from the resonator. Since the rate of stimulated emission is dependent on the amount of light entering the medium, the amount
Q-switching
Solid-state laser
oscillate the light produced by the ruby's fluorescence, causing stimulated emission. Ruby is one of the few solid state lasers that produce light in
Ruby_laser
possible to enhance the transition rate for bremsstrahlung through stimulated emission. Madey received a BS degree in physics and a MS degree in Quantum
John_Madey
Imaging by sections or sectioning using a penetrative wave
vacuum. By the laws of electrodynamics this acceleration leads to the emission of electromagnetic radiation (Jackson, 1975). Linear particle acceleration
Tomography
Quantum mechanical phenomenon
beam of photons, it will cyclically absorb photons and emit them by stimulated emission. One such cycle is called a Rabi cycle, and the inverse of its duration
Rabi_cycle
Chemical compound
"Cooperative photoproduction of Xe2+Cl− in liquid Cl 2/Xe solutions: Stimulated emission and gain measurements". Chem. Phys. Lett. 134 (1): 55–59. Bibcode:1987CPL
Xenon_monochloride
Topics referred to by the same term
STED may refer to: STED microscopy (stimulated emission depletion) STED sewer (septic tank effluent drainage) Septic tank effluent rainage system, a type
STED
Subset of language
example is the word laser, an acronym for "Light Amplification by Stimulated Emission of Radiation", and therefore all its letters should be capitalized
Scientific_terminology
Radio waves produced by the Sun
radio emission mechanism is electron-cyclotron maser emission (ECME). Maser is an acronym for "microwave amplification by stimulated emission of radiation"
Solar_radio_emission
American physicist (1927–2007)
Evtuhov, V. (August 15, 1961). "Stimulated Optical Emission in Fluorescent Solids II: Spectroscopy and Stimulated Emission in Ruby". Physical Review. 123
Theodore_Maiman
Variety of corundum; mineral; gemstone
electromagnetic radiation amplification through the mechanism of stimulated emission had already been successfully demonstrated in the laboratory by way
Ruby
Measure of temperature relative to absolute zero
T = 0 with the ZPE-induced spontaneous emission of photons (which is more properly called a stimulated emission in this context). The graph at upper right
Thermodynamic_temperature
Chemical element with atomic number 36 (Kr)
state: 2 Kr + F2 → 2 KrF The complex can undergo spontaneous or stimulated emission, reducing its energy state to a metastable, but highly repulsive
Krypton
Change of an electron between energy levels within an atom
transition, for molecules Phosphorescence Quantum jump Spontaneous emission Stimulated emission Schombert, James. "Quantum physics" University of Oregon Department
Atomic_electron_transition
Spectral line of hydrogen state transition in UHF radio frequencies
laboratory on Earth, but it can be artificially induced through stimulated emission using a hydrogen maser. It is commonly observed in astronomical settings
Hydrogen_line
Scientific law describing absorption of light
such effects will deplete the lower level and possibly give rise to stimulated emission. If any of these conditions are not fulfilled, there will be deviations
Beer–Lambert_law
reached in conjunction with super-resolution techniques like the stimulated emission depletion (STED) principle. Using a 4Pi microscope with appropriate
4Pi_microscope
properties could also be exploited. Within the STED microscopy (STimulated Emission Depletion microscopy) a fluorescent dye molecule is driven between
RESOLFT
Spectroscopy with lasers with very short pulses
absorption, excited-state absorption, and stimulated emission. Under normal conditions, the angles of the emission are randomly orientated and not detected
Ultrafast_laser_spectroscopy
Electromagnetic radiation with a single constant frequency
generates monochromatic and coherent radiation through a process of stimulated emission. Nearly monochromatic gravitational waves can be generated by spinning
Monochromatic_radiation
Type of chemical laser
deuterium fluoride, respectively. The excited molecules then undergo stimulated emission in the optical resonator region of the laser. Deuterium fluoride
Hydrogen_fluoride_laser
Laser generation technique
transitions in order to eliminate absorption without disturbing the stimulated emission. This phenomenon is also the essence of electromagnetically induced
Lasing_without_inversion
Law of physics
between the coefficients that give the rates of spontaneous emission and stimulated emission: A b a B b a ∝ ν 3 , ( h ν ≫ k T ) {\displaystyle {\frac
Wien_approximation
amplification due to stimulated emission. Historically the term came from the acronym "Microwave Amplification by Stimulated Emission of Radiation". Charles
Timeline of United States inventions (1946–1991)
Timeline_of_United_States_inventions_(1946–1991)
Optical imaging technique
variants that achieve resolution below the diffraction limit such as stimulated emission depletion microscopy (STED). Besides this technique a broad variety
Confocal_microscopy
Spectroscopic technique
excitation of the excited electrons to higher excited states (+ΔA), stimulated emission (-ΔA) or product absorption (+ΔA). Bleaching of ground state refers
Time-resolved_spectroscopy
Photons that excite electrons to a higher energy level in an atom
emit light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Photochromic applications. Photochromism
Photoexcitation
Method to produce extremely short duration laser pulses
the ensuing stimulated emission results in the generation of many photons. However, carriers are depleted as a result of stimulated emission faster than
Gain-switching
Branch of physics that studies light
through a process called stimulated emission. The term laser is an acronym for 'Light Amplification by Stimulated Emission of Radiation'. Laser light
Optics
Description of physical properties at the atomic and subatomic scale
relativity, this paper articulated the mechanism underlying the stimulated emission of radiation, which became the basis of the laser. This phase is
Quantum_mechanics
Powering mechanism for lasers
population inversion is achieved. In this condition, the mechanism of stimulated emission can take place and the medium can act as a laser or an optical amplifier
Laser_pumping
Chemical compound
have been borne in the galactic disk. By balancing and stimulated emission with spontaneous emission, it is possible to construct a relation between excitation
Ammonia
Fluorescence microscopy technique
improve its resolution beyond the Abbe limit. Also a combination of stimulated emission depletion microscopy (STED) and selective plane illumination microscopy
Light sheet fluorescence microscopy
Light_sheet_fluorescence_microscopy
Exotic phase of matter formed by Rydberg atoms
1088/0953-8984/19/27/276206. S2CID 95032480. L. Holmlid (2007). "Stimulated emission spectroscopy of Rydberg Matter: observation of Rydberg orbits in
Rydberg_matter
Sub-field of quantum physics and optics
process. Einstein's explanation of spontaneous emission also predicted the existence of stimulated emission, the principle upon which the laser rests. However
Quantum_optics
Laser that has nanoscale dimensions
candidates for on-chip optical computing. Albert Einstein proposed the stimulated emission in 1916, which contributed to the first demonstration of laser in
Nanolaser
based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation"
Glossary_of_physics
Electrical component producing a narrow electron beam
(linear accelerator); a high energy electron beam hits a target, stimulating emission of X-rays. Electron guns are also used in travelling-wave tube amplifiers
Electron_gun
Recent term gaining acceptance
'propaganda'). laser (1960), an acronym of "light amplification by stimulated emission of radiation" ruguanxue (2019), from Chinese 入关学 (rùguānxué, 'breakthrough
Neologism
laser-assisted sub-epithelial keratectomy LASER – light amplification by stimulated emission of radiation LASIK – laser-assisted in situ keratomileusis (eye surgery)
Laser_acronyms
Optical phenomenon
resolution beyond normal diffraction limits using a technique called Stimulated Emission Depletion (STED) Microscopy. This technique takes advantage of the
Optical_vortex
spectrometry MS/MS – Tandem mass spectrometry MSGE – Mechanically stimulated gas emission Mössbauer spectroscopy MTA – Microthermal analysis NAA – Neutron
List of materials analysis methods
List_of_materials_analysis_methods
Inelastic optical scattering phenomenon
medium, increasing the signal strength. This process (like other stimulated emission processes), allows all-optical amplification. This kind of amplification
Raman_amplification
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