Laser Doppler anemometers use a beam of light from a laser that is divided into two beams, with one propagated out of the anemometer.

Laser spectroscopy is used as a tool for studying phenomena with energy in the range of visible light, for example, to study non-linear optics and forbidden transitions in media.

Laser science is principally concerned with quantum electronics, laser construction, optical cavity design, the physics of producing a population inversion in laser media, and the temporal evolution of the light field in the laser.

This allows extremely narrow band detection ( much narrower than any possible color filter can achieve ) as well as precision measurements of phase and frequency of a light signal relative to a reference light source, as in Laser Doppler Vibrometry.

Laser beams typically do not have sharp edges like the cone of light that passes through the aperture of a lens does.

* Laser treatment – Using a special strong beam of light of one color ( laser ) to heal a damaged area.

Laser surgery involves cutting away a small circle-shaped area of the lens capsule, enough to allow light to pass directly through the eye to the retina.

Some examples include the Brightlance ( designed for killing Heavy Tanks ), the Star Cannon ( designed to kill Heavy Infantry ), and the Scatter Laser ( designed for killing light infantry ).

In 2007 a Laser light show was substituted for the fireworks and in 2008 there was a video slide show.

Laser diodes have the same reliability and failure issues as light emitting diodes.

Laser diodes find wide use in telecommunication as easily modulated and easily coupled light sources for fiber optics communication.

Laser cooling refers to the number of techniques in which atomic and molecular samples are cooled through the interaction with one or more laser light fields.

Laser range gated imaging is another form of active night vision which utilizes a high powered pulsed light source for illumination and imaging.

Laser cooling refers to techniques in which atomic and molecular samples are cooled through the interaction with one or more laser light fields.

Its small size and light weight facilitate every day carry and its built-in List of laser applications # Laser sight | laser sight improves aiming under low light conditions ( 2011 ).

Laser light is scattered when a particle crosses the first beam.

Laser light from gas or crystal lasers is highly collimated because it is formed in an optical cavity between two parallel mirrors, in addition to being coherent.

Laser diodes emit less-collimated light due to their short cavity, and therefore higher collimation requires a collimating lens.

** Laser Diode – converts electrical power into coherent light

As the Laser disc format is not digitally encoded and does not make use of compression techniques, it is immune to video macroblocking ( most visible as blockiness during high motion sequences ) or contrast banding ( subtle visible lines in gradient areas, such as out-of-focus backgrounds, skies, or light casts from spotlights ) that can be caused by the MPEG-2 encoding process as video is prepared for DVD.

Laser light is useful in entertainment because the coherent nature of laser light allows a narrow beam to be produced, which allows the use of optical scanning to draw patterns or images on walls, ceilings or other surfaces including theatrical smoke and fog without refocusing for the differences in distance, as is common with video projection.

Plan of entire Spruce Tree House from above, cut from 3D scanner | Laser scan data collected by a CyArk / National Park Service partnership

* Cyan Wisp is an alien-like creature from Sonic Colors with an attack move called Cyan Laser.

* LKSoft took concepts from EDIF 2 0 0 to create a proprietary data format with the default extension ". cam " for their CircuitCAM system offered by LPKF Laser & Electronics AG.

Over the next five decades, he created covers for numerous books and magazines, notably Astounding Science Fiction both before and after its title change to Analog ; Mad magazine ( for whom he painted many early covers featuring the iconic character, Alfred E. Neuman ) from 1958 to 1962 ( he started at Mad in February 1957 and by July 1958 was the magazine's new cover artist ; he painted most of its covers until October 1962 ); cover art for DAW, Signet, Ballantine Books, Avon, all 58 Laser Books ( which are now collectors ' items ), and over 90 covers for Ace books alone.

The most current estimate from Lunar Laser Ranging for the acceleration is ( see Chapront et alii 2002 ): (− 25. 858 ± 0. 003 )"/ cy < sup > 2 </ sup >.

Oblique view of Olympus Mons, from a Viking program | Viking image mosaic overlain on Mars Orbital Laser Altimeter | MOLA altimetry data, showing the volcano's asymmetry.

* Tesla Turbine Kit, Turbo-Generator, from OBI Laser Products.

Laser guidance can be provided either from the launcher, such as the nose-mounted opto-electronics of the AH-64 Apache attack helicopter, other airborne target designators or from ground based observers, the latter two options allowing the launcher to break line of sight with the target and seek cover.

Laser physicists typically choose to make θ the divergence of the beam: the far-field angle between the propagation direction and the distance from the beam axis for which the irradiance drops to 1 / e < sup > 2 </ sup > times the wavefront total irradiance.

Laser speckle on a digital camera image from a green laser pointer.

Laser projected from the observatory marking the Prime Meridian line

The point source has a wavelength of 633 nm ( e. g. He-Ne Laser ) and is located 1 m from the disc.

( This was during the period in which both Radio Caroline and Laser 558 were broadcasting successfully from ships off the British coast, though not without harassment from the authorities.

Free DEMs are also available for Mars: the MEGDR, or Mission Experiment Gridded Data Record, from the Mars Global Surveyor's Mars Orbiter Laser Altimeter ( MOLA ) instrument ; and NASA's Mars Digital Terrain Model ( DTM ).

The Lunar Laser Ranging Experiment from the Apollo 11 mission.

Laser hair removal technology became widespread in the US and many other countries from the 1990s onwards.

It identifies the Laser Beam Recorder ( LBR ) signal processor or mold that produced a particular stamper or a glass master disc from which molds are produced.

The players started at the same time and place, and used their points from the first five rounds to buy advantages, such as directional arrows in the Rings, completed words at the computer ( on one occasion, an easier path through the Laser Matrix ), batons already removed from the Response Revolve, or ladder pieces already built.

Heat 1 contestant Simon Evans was disqualified as he had not completely worked out all four words at the Laser Matrix computer yet proceeding through the rest of the round regardless ( he was told of his disqualification at the top of the Krypton Mountain ) and in Heat 2 the following week, contestant Alison Riley was disqualified as she had forcibly pulled out batons from the Response Revolve when the corresponding lights weren't flashing and unlike Evans, she was edited out of the remainder of the round after she had begun her ascent on the ladder and a replay was shown of her illegal move.

Two techniques often used with liquid and solid biological samples include electrospray ionization ( invented by John Fenn ) and matrix-assisted laser desorption / ionization ( MALDI, initially developed as a similar technique " Soft Laser Desorption ( SLD )" by K. Tanaka for which a Nobel Prize was awarded and as MALDI by M. Karas and F. Hillenkamp ).

Ablative Laser Propulsion ( ALP ) is a form of beam-powered propulsion in which an external pulsed laser is used to burn off a plasma plume from a solid metal propellant, thus producing thrust.

Laser ablation is the process of removing material from a solid ( or occasionally liquid ) surface by irradiating it with a laser beam.

Laser assisted direct imprint ( LADI ) is a rapid technique for patterning nanostructures in solid substrates and it does not require etching.

Laser engineered net shaping or LENS is a technology developed by Sandia National Laboratories for fabricating metal parts directly from a computer-aided design ( CAD ) solid model by using a metal powder injected into a molten pool created by a focused, high-powered laser beam.