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Aspect of laser science
In laser science, laser beam quality defines aspects of the beam illumination pattern and the merits of a particular laser beam's propagation and transformation
Laser_beam_quality
Technology that uses a laser to cut materials
5kW) and beam quality (<20mm.rad) to replace lower power CO2 lasers. The cutting head: holds the optic lenses focuses and adjusts beam quality directs cutting
Laser_cutting
Measure of laser beam quality
narrowest point (the beam waist). The BPP quantifies the quality of a laser beam, and how well it can be focused to a small spot. A Gaussian beam has the lowest
Beam_parameter_product
Measurement device
A 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
Measure of laser beam quality
In laser science, the parameter M2, also known as the beam propagation ratio or beam quality factor, is a measure of laser beam quality. It represents
M_squared
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
Use of laser beams to remove material from a workpiece
Laser beam machining (LBM) is a form of machining that uses heat directed from a laser beam. This process uses thermal energy to remove material from
Laser_beam_machining
Handheld device that emits a laser beam
A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i
Laser_pointer
Device that emits light via optical amplification
communication, laser cutting, and lithography. It also allows a laser beam to stay narrow over great distances (collimation), used in laser pointers, lidar
Laser
How much a beam expands as it travels
applications, a lower-divergence beam is preferable. Neglecting divergence due to poor beam quality, the divergence of a laser beam is proportional to its wavelength
Beam_divergence
Topics referred to by the same term
Square metre (m2), an SI measure of area M squared (M2), a measure of laser beam quality M2 (album), by Marcus Miller m2 (artist), German DJ and musician Mathis
M²
Monochrome light beam whose amplitude envelope is a Gaussian function
intended output of many lasers, as such a beam diverges less and can be focused better than any other. When a Gaussian beam is refocused by an ideal
Gaussian_beam
Engraving objects using lasers
of 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
Laser_engraving
Width of an electromagnetic beam
or by using a laser beam profiler. Beam waist Fresnel zone Siegman, A. E. (October 1997). "How to (Maybe) Measure Laser Beam Quality" (PDF). Archived
Beam_diameter
Laser using electron beam in vacuum as gain medium
external excitation laser is provided. The radiation becomes sufficiently strong that the transverse electric field of the radiation beam interacts with the
Free-electron_laser
Range finding device that uses a laser beam to determine the distance to an object
A laser rangefinder, also known as a laser telemeter or laser distance meter, is a rangefinder that uses a laser beam to determine the distance to an
Laser_rangefinder
Infrared laser
Argus was a two-beam high power infrared neodymium doped silica glass laser with a 20 cm (7.9 in) output aperture built at Lawrence Livermore National
Argus_laser
Infrared laser
The Vulcan laser is an infrared, 8-beam, petawatt neodymium glass laser at the Rutherford Appleton Laboratory's Central Laser Facility in Oxfordshire,
Vulcan_laser
Semiconductor laser
communications, barcode readers, laser pointers, CD/DVD/Blu-ray disc reading/recording, laser printing, laser scanning, and light beam illumination. With the use
Laser_diode
Light all pointing in the same direction
collimated beam of light or other electromagnetic radiation has parallel rays, and therefore will spread minimally as it propagates. A laser beam is an archetypical
Collimated_beam
Electrostatic digital printing process
Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly
Laser_printing
Laser welding not only requires high laser power but also a high quality beam to obtain the desired "deep-weld effect". The resulting higher quality of
Laser-hybrid_welding
Directed-energy weapon using lasers
chemicals present. In essence, a laser generates a beam of light that requires clear air or a vacuum to operate. Low-power lasers have the potential to serve
Laser_weapon
Laser construction List of laser articles Maser producing or amplifying a coherent microwave beam X-ray laser producing a coherent x-ray or EUV beam Atom
List_of_laser_types
Topics referred to by the same term
macrophage M2 (economics), a measure of the money supply M2, a measure of laser beam quality M2 (Mazda), a marketing approach by Mazda M2 Group, an Australian
M2
Type of laser with two counter-rotating beams
Ring lasers are composed of two beams of light of the same polarization traveling in opposite directions ("counter-rotating") in a closed loop. Ring lasers
Ring_laser
profiler Laser beam quality Laser beam riding Laser blended vision Laser bridge Laser broom Laser camera system Laser cannon Laser cautery Laser coagulation
List_of_laser_articles
Laser using an optical fiber as the active gain medium
producing a diffraction-limited, high-quality optical beam. Fiber lasers are compact compared to solid-state or gas lasers of comparable power, because the
Fiber_laser
United States laser weapon program
Energy Laser (HEL) completed beam quality and power measurements tests. The Gen 3 laser has a number of upgrades that provide improved beam quality, increased
High Energy Liquid Laser Area Defense System
High_Energy_Liquid_Laser_Area_Defense_System
Type of laser
A titanium-sapphire laser (also known as a Ti:sapphire laser, Ti:Al2O3 laser or Ti:sapph) is a tunable laser which emits red and near-infrared light in
Titanium-sapphire_laser
Device which creates images with lasers
A laser projector is a device that projects changing laser beams on a screen to create a moving image for entertainment or professional use. It consists
Laser_projector
Instrument for sensing microscopic vibrations of a surface
A laser Doppler vibrometer (LDV) is a scientific instrument that is used to make non-contact vibration measurements of a surface. The laser beam from the
Laser_Doppler_vibrometer
Recording to reproduce a three-dimensional light field
common arrangement, the laser beam is split into two, one known as the object beam and the other as the reference beam. The object beam is expanded by passing
Holography
Surface engineering process
targeted surface using a pulsed laser. The pressures observed were much larger than could be created by the force of the laser beam alone. Research into the
Laser_peening
Turntable that plays records using laser beams
A laser turntable (or optical turntable) is a phonograph that plays standard LP records (and other gramophone records) using laser beams as the pickup
Laser_turntable
Optical concept
balance between power efficiency and beam quality is critical. When a beam of light, typically a Gaussian beam from a laser source, encounters an aperture,
Overfill
Vaporizing laser beam in a vacuum chamber
Pulsed laser deposition (PLD) is a physical vapor deposition (PVD) technique where a high-power pulsed laser beam is focused inside a vacuum chamber to
Pulsed_laser_deposition
Type of television
the active medium. These lasers combine high overall efficiency with good beam quality. The light from the high power IR-laser diodes is converted into
Laser_TV
Type of gas laser
compared to other visible lasers producing beams of similar quality in terms of spatial coherence (a single-mode Gaussian beam) and long coherence length
Helium–neon_laser
Laser in which electricity is discharged through gas
and laboratories because of their low cost and near-perfect beam qualities. Nitrogen lasers operate in the ultraviolet range, typically 337.1 nm, using
Gas_laser
Stream of charged, or less frequently neutral particles
high-power laser systems or the kinetic energy of other charged particles. This technique is under active development, but cannot provide reliable beams of sufficient
Particle_beam
Type of semiconductor laser diode
The vertical-cavity surface-emitting laser (VCSEL /ˈvɪksəl/) is a type of semiconductor laser diode with laser beam emission perpendicular from the top
Vertical-cavity surface-emitting laser
Vertical-cavity_surface-emitting_laser
Lamp mounted in the front of a vehicle
low-light conditions. The Rolls-Royce Phantom VIII employs laser headlights with a high beam range of over 600 meters. Automatic systems for activating
Headlamp
American engineer & educator (1931–2011)
America, 1992). A. E. Siegman, "Defining and Measuring Laser Beam Quality," in Solid State Lasers: New Developments and Applications (Plenum Press, 1994)
Anthony_E._Siegman
Fictional weapon
destructive effect. They have various names: ray gun, death ray, beam gun, blaster, laser gun, laser pistol, phaser, zap gun, etc. In most stories a raygun emits
Raygun
Type of laser
diode acts as its own laser, the quality of the output beam is independent of that of the input beam. In comparison, diode lasers can only reach a few
Diode-pumped solid-state laser
Diode-pumped_solid-state_laser
flour. A laser beam sinters (melts) the gold flour locally in an extremely small point, and any shape may be ‘drawn’ precisely with the laser beam, in three
Laser_sintering_of_gold
Method of spatial measurement using laser
chemical compounds, aerosols, clouds and even single molecules. A narrow laser beam can map physical features with very high resolutions; for example, an
Lidar
Arrangement of mirrors
designing high power amplifiers with good beam quality. If the optical cavity is not empty (e.g., a laser cavity which contains the gain medium), the
Optical_cavity
Topics referred to by the same term
Party Bits per pixel, also known as color depth Beam parameter product, a measure of laser beam quality BeanShell preprocessor Breakthrough Propulsion
BPP
Techniques to control particle beam properties
emittance. Techniques for particle beam cooling include: Stochastic cooling Electron cooling Ionization cooling Laser cooling Radiation damping Buffer-gas
Particle_beam_cooling
Instruments that accurately measure large objects
"retroreflective" because they reflect the laser beam back in the same direction it came from (in this case, back to the laser tracker). One type of target in common
Laser_tracker
Crystal used as a lasing medium for solid-state lasers
or malignant lesions in various organs are ablated by the beam. In oncology, Nd:YAG lasers can be used to remove skin cancers. They are also used to reduce
Nd:YAG_laser
Optical imaging technique
confocal microscope only focuses a smaller beam of light at one narrow depth level at a time. Thus, confocal laser scanning microscopy (CLSM) achieves a controlled
Confocal_microscopy
Optical system with resolution performance at the instrument's theoretical limit
The beam quality of a laser beam is characterized by how well its propagation matches an ideal Gaussian beam at the same wavelength. The beam quality factor
Diffraction-limited_system
Optical device
Fourier optics to alter the structure of a beam of light or other electromagnetic radiation, typically coherent laser light. Spatial filtering is commonly used
Spatial_filter
Infrared laser
to smooth the beam after amplification stages and thus had a fairly poor beam quality. Long path was mostly used to investigate laser energy absorption
Long_path_laser
Device that plays LaserDisc discs
larger laser beam spot was always perfectly circular and helping to reduce or eliminate crosstalk on warped CLV discs. In addition, the gas laser was less
LaserDisc_player
Laser used in dentistry
laser beam, which in turn heats up the glass fiber's tip. The soft tissue is cut, on contact, by the hot charred glass tip and not by the laser beam itself
Dental_laser
Device for producing coherent EM waves in the sub-visible spectrum
medium in a laser). By putting such an amplifying medium in a resonant cavity, feedback is created that can produce coherent radiation. Atomic beam masers
Maser
Treatment using irradiation with light of low power intensity
Low-level laser therapy (LLLT), cold laser therapy, or photobiomodulation (PBM) is a photochemical reaction-based medical treatment that applies low-level
Low-level_laser_therapy
Laser pulsing technique
formation or Q-spoiling, is a technique by which a laser can be made to produce a pulsed output beam. The technique allows the production of light pulses
Q-switching
Laser guided and stabilized welding (LGS-welding) is a process in which a laser beam irradiates an electrical heated plasma arc to set a path of increased
Laser guided and stabilized arc welding
Laser_guided_and_stabilized_arc_welding
Long bladed weapon
these is known as an energy sword (sometimes also referred to as a "beam sword" or "laser sword"), a sword whose blade consists of, or is augmented by, concentrated
Sword
Communication using lasers in outer space
telescopes as beam expanders. On 20 January 1968, the television camera of the Surveyor 7 lunar lander successfully detected two argon lasers from Kitt Peak
Laser_communication_in_space
1064 nm being the most common. These lasers provide a high beam quality allowing for small spot sizes. This type of beam can be delivered via fiber optic
Laser_welding_of_polymers
Used to measure the speed of vehicles
lidar device emits 30 ns pulses of laser light with wavelength 905 nm and 50 milliwatts of power with 3 milliradian beam divergence. The power is sufficiently
Lidar_traffic_enforcement
Technology for measuring geometrical dimensions of particle
Laser diffraction analysis, also known as laser diffraction spectroscopy, is a technology that utilizes diffraction patterns of a laser beam passed through
Laser_diffraction_analysis
Scientific instrument measuring light collimation
and to use this phenomenon to test the collimation of light beams, especially from laser sources which have a coherence length which is usually significantly
Shearing_interferometer
process that is challenging to perform with molecular beam epitaxy. TLE uses continuous-wave lasers (typically with a wavelength of around 1000 nm) located
Thermal_laser_epitaxy
Improved air-spaced calcite polarizer design
beam intensities, such those produced by a laser. The differences may include using calcite selected for low scattering loss, improved polish quality
Glan–Taylor_prism
Multinational optronics solutions corporation
Products include reliable and accurate laser power and energy meters, laser beam diagnostic instrumentation, laser measurement tools and spectral analysis
Ophir_Optronics
Process of creating thru-holes using laser cutting methods
of 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
Laser_drilling
still possible, that a visible or invisible beam could cause permanent harm to a pilot's eyes. Although laser weapons are under development by armed forces
Lasers_and_aviation_safety
One-design sailing dinghy
The Laser (also known as ILCA) is a class of single-handed, one-design sailing dinghies using a common hull design with three interchangeable rigs of
Laser_(dinghy)
Thermopile laser sensors (Fig 1) are used for measuring laser power from a few μW to several W (see section 2.4). The incoming radiation of the laser is converted
Thermopile_laser_sensor
List of lasers with highest peak power
laser system must handle large amounts of excessive heat when pumped at a much higher frequency as well as thermal effects that degrades beam quality
List_of_petawatt_lasers
Spectroscopic technique
complementary information. Typically, a sample is illuminated with a laser beam. Electromagnetic radiation scattered from the illuminated spot is collected
Raman_spectroscopy
3D printing technique
Selective laser sintering (SLS) is an additive manufacturing (AM)(3D printing) technique that uses a laser as the power and heat source to sinter powdered
Selective_laser_sintering
Communication using light sent through free space
detection of laser light from Earth by the Galileo probe, of 6 million km (3.7 million mi) in 1992. In January 2013, NASA used lasers to beam an image of
Free-space optical communication
Free-space_optical_communication
Charged particle acceleration technique
These structures are created using either ultra-short laser pulses or high energy particle beams that are matched to the plasma parameters. The technique
Plasma_acceleration
Any laser not classified as continuous-wave
tattoo removal and laser range finders among other applications. Pulsed lasers are also used in soft-tissue surgery. When a laser beam comes into contact
Pulsed_laser
Optical filter in fluorescence microscopy
and the use of holographic diffraction gratings, etc. [for beam diffraction of white laser light into the required excitation wavelength (selected for
Excitation_filter
Laser pumped with the energy of fission fragments
pumped laser - contains a diagram Abstract: Nuclear pumped laser II 1979 NASA report on using nuclear reactions to directly power a laser beam Nuclear
Nuclear_pumped_laser
Imaging technology used in printing
around its axis to beam the laser on the desired part of the fixed plate. The construction type makes it more difficult to use several lasers at the same time
Computer_to_plate
Corrective ophthalmological surgery
LASIK or Lasik (/ˈleɪsɪk/; "laser-assisted in situ keratomileusis"), commonly referred to as laser eye surgery or laser vision correction, is a type of
LASIK
Scanning of an object or environment to collect data on its shape
range as the beam width will increase over distance. Software can also help by determining that the first object to be hit by the laser beam should cancel
3D_scanning
Scientific instrument for testing lenses
to test a lens. Light from a laser is expanded by a diverging lens (not shown), then is collimated into a parallel beam. A convex spherical mirror is
Twyman–Green_interferometer
a reference beam derived from the same laser (not shown in the diagram), and the interference pattern between object and reference beams is recorded.
Rainbow_hologram
Characteristic of an optical system
of the beam. It is very common for the beam to have a Gaussian profile. Laser physicists typically choose to make θ the divergence of the beam: the far-field
Numerical_aperture
Method to mark surfaces
the substrate used, marking speed, laser spot size, beam overlap, materials thickness, and laser parameters. Laser bonding materials may be applied by
Laser_bonding
1990 video game
mirror projects a red light beam away from the gun each time the player makes a shot, giving the illusion that an actual laser ray comes out from the gun
Laser_Ghost
Type of aerogel
achieve a more uniform plasma, which will ultimately improve the quality of the X-ray laser beam. SEAgel could also be used as food packaging or the encapsulating
SEAgel
American nuclear fusion facility
energy 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
American aerospace engineer
aerospace engineer known for research on beamed-energy propulsion and for proposing and developing the lightcraft, a laser-propelled flight vehicle concept.
Leik_Myrabo
based on optical coherence tomography that is used for quality assurance of keyhole laser beam welding, a welding method that is gaining popularity in
Weld_quality_assurance
Digital optical disc data storage format
evolution of LaserDisc technology, where a focused laser beam is used that enables the high information density required for high-quality digital audio
Compact_disc
Type of atomic emission spectroscopy
Laser-induced breakdown spectroscopy (LIBS) is a type of atomic emission spectroscopy which uses a highly energetic laser pulse as the excitation source
Laser-induced breakdown spectroscopy
Laser-induced_breakdown_spectroscopy
Laser which emits light with blue wavelengths
01%. Blue beams can be produced using helium-cadmium gas lasers at 441.6 nm, or argon-ion lasers at 458 and 488 nm, The violet 405 nm laser (whether constructed
Blue_laser
Relativistic effect due to rotation
level of about 100 watts of laser power at the beam splitter. After an upgrade to Advanced LIGO several kilowatts of laser power are required. A variety
Sagnac_effect
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