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Optical devices treating collimated light
function as a simple beam expander for collimated light. The main advantage of the Galilean design is that it never focuses a collimated beam to a point, so
Beam_expander
Equipment using an organic dye to emit coherent light
linewidth dye laser, introduced by Hänsch, used a Galilean telescope as beam expander to illuminate the diffraction grating. Next were the grazing-incidence
Dye_laser
shape, via the introduction of a convex lens prior to the prismatic expander, of a beam extremely elongated in the propagation plane and extremely thin in
N-slit_interferometer
Monochrome light beam whose amplitude envelope is a Gaussian function
In optics, a Gaussian beam is an idealized beam of electromagnetic radiation whose amplitude envelope in the transverse plane is given by a Gaussian function;
Gaussian_beam
Theory in optics
\over \partial \lambda }\right)^{-1}} where M is the beam magnification provided by the beam expander that multiplies the angular dispersion provided by
Multiple-prism dispersion theory
Multiple-prism_dispersion_theory
Optical device
case of multiple-prism beam expanders this factor can be as high as 100–200. When the dispersion of the multiple-prism expander is not equal to zero, then
Multiple-prism grating laser oscillator
Multiple-prism_grating_laser_oscillator
Rocket engine operation method
an expander cycle engine are the RL10 from Aerojet Rocketdyne and the Vinci engine for Ariane 6. The expander bleed cycle (also known as the expander open
Expander_cycle
Device that emits light via optical amplification
optical communication, laser cutting, and lithography. It also allows a laser beam to stay narrow over great distances (collimation), used in laser pointers
Laser
Laser pulsing technique
is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses with extremely high
Q-switching
French fusion research project
(PAM), exiting the PAMs as a square beam about 40 by 40 millimetres (1.6 by 1.6 in). The system is arranged so that beams from the PAMs are sent into the
Laser_Mégajoule
Welding technique
Laser beam welding (LBW) is a welding technique used to join pieces of metal or thermoplastics through the use of a laser. The beam provides a concentrated
Laser_beam_welding
Process of hair removal by exposure to laser pulses
of the laser beam, directly affects the depth of penetration of the light energy due to scattering effects in the dermal layer. Larger beam diameters or
Laser_hair_removal
Measure of laser beam quality
known as the beam propagation ratio or beam quality factor is a measure of laser beam quality. It represents the degree of variation of a beam from an ideal
M_squared
Arrangement of mirrors
geometry (resonator type) must be chosen so that the beam remains stable, i.e. the size of the beam does not continually grow with multiple reflections
Optical_cavity
Process that removes material from an object by heating it with a laser
a solid (or occasionally liquid) surface by irradiating it with a laser beam. At low laser flux, the material is heated by the absorbed laser energy and
Laser_ablation
3D printing technique
Desktop manufacturing Digital fabricator Direct digital manufacturing Electron-beam melting Fab lab Fused filament fabrication Instant manufacturing, also known
Selective_laser_sintering
Scientific instruments
following components: a laser (usually Nd:YAG), a beam expander, some optics used to steer the beam location in the sample plane, a microscope objective
Optical_tweezers
Technology that uses a laser to cut materials
optics and CNC (computer numerical control) are used to direct the laser beam to the material. A commercial laser for cutting materials uses a motion control
Laser_cutting
Experimental inflatable module – Installed on ISS
The Bigelow Expandable Activity Module (BEAM) is an experimental expandable space station module developed by Bigelow Aerospace under contract with NASA
Bigelow Expandable Activity Module
Bigelow_Expandable_Activity_Module
{\displaystyle ~P~} as it passes through the medium. The factor by which an input beam is amplified by a medium is called the gain and is represented by G. G =
Gain_(laser)
Device to create a more uniform laser beam
A beam homogenizer is a device that smooths out the irregularities in a laser beam profile to create a more uniform one. Most beam homogenizers use a multifaceted
Beam_homogenizer
Type of ultraviolet laser important in chip manufacturing and eye surgery
Institute in Moscow, using liquid xenon dimer (Xe2) excited by an electron beam. Spurred by this report, H.A. Koehler et al. presented a better substantiation
Excimer_laser
Equation
on the Huygens–Fresnel principle or Kirchhoff's diffraction formula. Beam expander Dirac's notation Fraunhofer diffraction (mathematics) Free-space optical
N-slit interferometric equation
N-slit_interferometric_equation
Spacecraft communication system using lasers
transmitted beam-width is inversely proportional to the frequency used, so the shorter the wavelength used, the narrower and more focused a beam can be made
Deep Space Optical Communications
Deep_Space_Optical_Communications
Recreational shooting sport and game
for combat training. This MILES system functioned like laser tag in that beams are "fired" into receivers that score hits. The first known toy to use infrared
Laser_tag
European fitness brand
GymBeam. Its first own product was the Magnum protein. In February 2015, GymBeam expanded into the Hungarian (GymBeam.hu) and Czech markets (GymBeam.cz)
GymBeam
English polymath (1642–1727)
collected in his book Opticks, published in 1704. He originated prisms as beam expanders and multiple-prism arrays, which would later become integral to the
Isaac_Newton
Spectroscopic technique
complementary information. Typically, a sample is illuminated with a laser beam. Electromagnetic radiation scattered from the illuminated spot is collected
Raman_spectroscopy
processing) Barcode reader Basir Beam-powered propulsion Beam diameter Beam dump Beam expander Beam homogenizer Beam parameter product Beamz Big Bang
List_of_laser_articles
Technique for amplifying ultrashort laser pulses
self-focusing. For example, some of the most powerful compressed CPA laser beams, even in an unfocused large aperture (after exiting the compression grating)
Chirped_pulse_amplification
Kind of show made with laser light
entertain an audience. A laser light show may consist only of projected laser beams set to music, or may accompany another form of entertainment, typically
Laser_lighting_display
Vaporizing laser beam in a vacuum chamber
physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to strike a target of the material that
Pulsed_laser_deposition
Optical component allowing the transmission of light in only one direction
transmitted direction the beam is split and then combined and focused into the output collimator. In the isolated direction the beam is split, and then diverged
Optical_isolator
Laser in which electricity is discharged through gas
physicist William R. Bennett, Jr., in 1960. It produced a coherent light beam in the infrared region of the spectrum at 1.15 micrometres. Gas lasers using
Gas_laser
3D printing technique
part is fully dense. A similar process is electron beam melting (EBM), which uses an electron beam as the energy source. Selective laser melting is able
Selective_laser_melting
Medical use of laser to cut tissues
photothermolysis). The laser beam penetrates the skin until it encounters chromophore which absorbs the laser beam. After absorption of the laser beam, heat is generated
Laser_surgery
Heuristic search algorithm
computer science, beam search is a heuristic search algorithm that explores a graph by expanding the most promising node in a limited set. Beam search is a
Beam_search
Laser which uses a solid gain medium
high power levels (terawatts) and high energies (megajoules), for multiple-beam inertial confinement fusion. The first material used for lasers was synthetic
Solid-state_laser
Digital optical disc data storage format
compact disc is an evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality
Compact_disc
Military warning system
devices are used even without cooling. Some devices detect only the main beam of foreign lasers while others detect even scattered rays. France Thales
Laser_warning_receiver
Lens with a variable focal length
make an adjustable beam expander. This can be used, for example, to change the size of a laser beam so that the irradiance of the beam can be varied. Early
Zoom_lens
Limit at which an optical material will be damaged by a laser
common strategy. Further, the beam can be expanded, reducing the fluence present on optics. Finally, the beam can be temporally stretched, i.e. "chirped"
Laser_damage_threshold
Engraving objects using lasers
the laser beam aimed at the surface. The surface is chosen to match the type of material the laser can act on. The point where the laser beam touches the
Laser_engraving
Laser which emits light with blue wavelengths
use high currents and large cooling due to poor efficiency: 0.01%. Blue beams can be produced using helium-cadmium gas lasers at 441.6 nm, or argon-ion
Blue_laser
Optical imaging technique
as it can penetrate, while a confocal microscope only focuses a smaller beam of light at one narrow depth level at a time. Thus, confocal laser scanning
Confocal_microscopy
Electrostatic digital printing process
graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define
Laser_printing
Laser using electron beam in vacuum as gain medium
Madey used a 43 MeV electron beam and 5 m long wiggler to amplify a signal. To create an FEL, an electron gun is used. A beam of electrons is generated by
Free-electron_laser
Ray tracing technique
only paraxial rays. Each optical element (surface, interface, mirror, or beam travel) is described by a 2 × 2 ray transfer matrix which operates on a vector
Ray_transfer_matrix_analysis
Source of optical gain in a laser
pumped by chemical reactions, nuclear fission, or with high-energy electron beams. The simplest model of optical gain in real systems includes just two, energetically
Active_laser_medium
Handheld device that emits a laser beam
low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot. The beam may be focused with lenses
Laser_pointer
Laser that obtains energy from chemical reactions
wavelength radiation, which is very helpful for forming a very well focused beam. This type of COIL laser is used today in the ABL (Airborne Laser, the laser
Chemical_laser
Topics referred to by the same term
up beam in Wiktionary, the free dictionary. Beam may refer to: Light beam, or beam of light, a directional projection of light energy Laser beam Radio
Beam
Japanese clothing brand
custom-tailored pieces. Beams logo and artwork are seen as abstract and have a cartoonish look. In May 2005, Beams expanded its business internationally
Beams_(brand)
amplifying a coherent microwave beam X-ray laser producing a coherent x-ray or EUV beam Atom laser producing a coherent beam of atoms Gravity laser, a hypothetical
List_of_laser_types
When a system has more excited-state members than ground-state
inhomogeneous magnetic field will separate atoms in the higher energy state from a beam of mixed-state atoms. The separated population represents a population inversion
Population_inversion
Nonlinear optical process
Takatomo; Tanaka, Mitsuhiro; Okada, Yukikatsu (2000). "20-W ultraviolet-beam generation by fourth-harmonic generation of an all-solid-state laser". Optics
Harmonic_generation
American brand of bourbon whiskey
Jim Beam is a brand of bourbon whiskey produced in Kentucky by the Japanese distilled beverage conglomerate Suntory Global Spirits. It is one of the best-selling
Jim_Beam
Technique of measuring electromagnetic spectra
infrared laser, optical beamsplitters, beam steering mirrors, delay stages, a terahertz generator, terahertz beam focusing and collimating optics like parabolic
Terahertz time-domain spectroscopy
Terahertz_time-domain_spectroscopy
Scanning of an object or environment to collect data on its shape
the beam hitting an edge are increased and the resulting data will show noise just behind the edges of the object. Scanners with a smaller beam width
3D_scanning
Apparatus for trapping and cooling neutral atoms
brings an atomic transition into resonance with the laser beams. The polarization of the beam propagating in the opposite direction of this atomic motion
Magneto-optical_trap
How much a beam expands as it travels
In electromagnetics, especially in optics, beam divergence is an angular measure of the increase in beam diameter or radius with distance from the optical
Beam_divergence
Imaging technique
time-of-flight of reflected light. OCT uses transverse sample scanning of the light beam to obtain two- and three-dimensional images. Short-coherence-length light
Optical_coherence_tomography
Device that amplifies an optical signal
that uses a waveguide to boost an optical signal. A relatively high-powered beam of light known as the pump light is mixed with the amplified input signal
Optical_amplifier
process with CO2 laser beams. One consideration crucial to the success of a heat treatment operation is control of the laser beam irradiance on the part
List_of_laser_applications
University of Rochester research center in Brighton, New York
short-pulse beams can also be combined and directed into the OMEGA target chamber, in addition to OMEGA's 60 existing beams. The high powers of these beams combined
Laboratory for Laser Energetics
Laboratory_for_Laser_Energetics
Electromagnetic wave that is not pulsed
output beam, sometimes referred to as "free-running," as opposed to a q-switched, gain-switched or modelocked laser, which has a pulsed output beam. The
Continuous_wave
Fluorescence imaging technique
excitation, mainly fluorophores in the micrometer-sized focus of the laser beam are excited, which results in the spatial resolution of the image. This contrasts
Two-photon excitation microscopy
Two-photon_excitation_microscopy
Measurement device
laser beam profiler captures, displays, and records the spatial intensity profile of a laser beam at a particular plane transverse to the beam propagation
Laser_beam_profiler
Surface engineering process
in the material were generated from the rapidly expanding plasma created when the pulsed laser beam struck the target. Subsequently, this led to interest
Laser_peening
Part of an optical resonator which allows intracavity light to be emitted
intracavity beam. An output coupler most often consists of a partially reflective mirror, allowing a certain portion of the intracavity beam to transmit
Output_coupler
Laser cooling technique
single laser beam as long as that beam has a component along all three motional degrees of freedom. This is in contrast to the six beams required to trap
Doppler_cooling
German physicist (born 1941)
grating, have had a major impact in laser spectroscopy. Atom laser Beam expander Dye laser Doppler cooling Gray molasses Tunable laser Vernier spectroscopy
Theodor_W._Hänsch
Technique for measuring chemical composition of a gas
setup consists of a tunable diode laser light source, transmitting (i.e. beam shaping) optics, optically accessible absorbing medium, receiving optics
Tunable diode laser absorption spectroscopy
Tunable_diode_laser_absorption_spectroscopy
Process of creating thru-holes using laser cutting methods
the workpiece material through absorption of energy from a focused laser beam. The energy required to remove material by melting is about 25% of that needed
Laser_drilling
Method to mark surfaces
of factors, including the substrate used, marking speed, laser spot size, beam overlap, materials thickness, and laser parameters. Laser bonding materials
Laser_bonding
Spectroscopy with lasers with very short pulses
probe beam with a higher energy pump beam in a non-linear crystal such that the weak beam gets amplified and the remaining energy goes out as a new beam called
Ultrafast_laser_spectroscopy
Treatment using irradiation with light of low power intensity
Ash, C, M Dubec, K Donne and T Bashford (2017) "Effect of wavelength and beam width on penetration in light-tissue interaction using computational methods"
Low-level_laser_therapy
usually less than 1 μm, thus the target cells are not affected by the laser beam. Even live cells are not damaged by the laser cutting and are viable after
Laser_capture_microdissection
Semiconductor laser
choice of the semiconductor material determines the wavelength of the emitted beam, which in today's laser diodes range from the infrared (IR) to the ultraviolet
Laser_diode
Technology for measuring geometrical dimensions of particle
spectroscopy, is a technology that utilizes diffraction patterns of a laser beam passed through any object ranging from nanometers to millimeters in size
Laser_diffraction_analysis
Device used to disperse light
degree of bending of the light's path depends on the angle that the incident beam of light makes with the surface, and on the ratio between the refractive
Dispersive_prism
Study involving matter and electromagnetic radiation
X-ray photoelectron spectroscopy is a surface analysis technique that uses a beam of X-rays to perform photoemission spectroscopy Photothermal spectroscopy
Spectroscopy
Multinational beverage company
Suntory Global Spirits Inc., formerly known as Beam Suntory, Inc., and before that as Beam, Inc., is an American beverage company that is a subsidiary
Suntory_Global_Spirits
welding is a type of welding process that combines the principles of laser beam welding and arc welding. The combination of laser light and an electrical
Laser-hybrid_welding
Structural element capable of withstanding loads by resisting bending
A beam is a structural element designed to carry loads perpendicular to its long (or "horizontal") axis. This contrasts with a strut or column, which bears
Beam_(structure)
Spectral linewidth of a laser beam
Laser linewidth is the spectral linewidth of a laser beam. Two of the most distinctive characteristics of laser emission are spatial coherence and spectral
Laser_linewidth
American nuclear fusion facility
source for thermonuclear warheads, while sources such as laser beams and particle beams are used in non-weapon devices. The target is a small spherical
National_Ignition_Facility
dissociation ATI – above-threshold ionization AWG – arrayed waveguide grating BPP – beam parameter product CD-ROM – compact disc read-only memory CEO – carrier-envelope
Laser_acronyms
Digital optical disc format
thinner to avoid unwanted optical effects, designers can cause the laser beam to focus on a smaller spot, which effectively allows more information to
Blu-ray
Excimer laser
States Naval Research Laboratory in Washington, DC is a 56-beam, 4–5 kJ per pulse electron beam pumped krypton fluoride excimer laser which operates in the
Nike_laser
Component of x-ray laser
the lagging electrons to catch up. A free-electron laser depends upon a beam of tightly bunched electrons. Short bunches of electrons are produced by
Magnetic_chicane
Laser using vapors of copper as the lasing medium
Hai(Israel) in September 1980. The alternating green and yellow moving beams were controlled by S. Kamin using a set of mirrors and chromatic filters
Copper_vapor_laser
Foundation. Laserglow was the first company to ever design and produce a beam expander that was meant specifically for use on handheld lasers. The Aries laser
Laserglow_Technologies
2013 video game
BeamNG.drive is a sandbox vehicle simulation video game developed and published by Bremen-based video game developer BeamNG GmbH for Windows and Linux
BeamNG.drive
Infrared laser
The Shiva laser was a powerful 20-beam infrared neodymium glass (silica glass) laser built at Lawrence Livermore National Laboratory in 1977 for the study
Shiva_laser
High-power short pulse laser facility
C) of neodymium glass amplifiers (or Nd:glass), two identical longpulse beams lines, A&B, and a third beamline, C, that could be operated either in longpulse
Trident_laser
Optical device for shortening laser pulses
F. J. Duarte and J. A. Piper, "Dispersion theory of multiple-prism beam expander for pulsed dye lasers," Opt. Commun. 43, 303-307 (1982). F. J. Duarte
Prism_compressor
Infrared laser
did not use spatial filters to smooth the beam after amplification stages and thus had a fairly poor beam quality. Long path was mostly used to investigate
Long_path_laser
Short pulse lasers
fuel capsules. The ISKRA-4 laser is a spatially filtered (image relayed) 8 beam photolytically pumped iodine gas laser capable of producing laser pulse energies
ISKRA_lasers
High-power laser
confinement fusion (ICF). The Cyclops was a single-beam Neodymium glass (Nd:glass) laser. The Janus laser, a two-beam version of it, was also completed in 1975
Cyclops_laser
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