laser

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laser

la·ser

 (lā′zər)
n.
1.
a. Any of several devices that emit highly amplified and coherent radiation of one or more discrete wavelengths. One of the most common lasers makes use of atoms in a metastable energy state, which, as they decay to a lower energy level, stimulate others to decay, resulting in a cascade of emitted radiation.
b. A beam of radiation emitted by a laser.
2. Sports A ball or puck sent in a straight line at high speed: shot a laser into the upper right corner of the goal.

[l(ight) a(mplification by) s(timulated) e(mission of) r(adiation).]

laser

(ˈleɪzə)
n
1. (General Physics) a source of high-intensity optical, infrared, or ultraviolet radiation produced as a result of stimulated emission maintained within a solid, liquid, or gaseous medium. The photons involved in the emission process all have the same energy and phase so that the laser beam is monochromatic and coherent, allowing it to be brought to a fine focus
2. (General Physics) any similar source producing a beam of any electromagnetic radiation, such as infrared or microwave radiation
vb (tr)
3. to use a laser on (something), esp as part of medical treatment
4. (often foll by off) to remove (a tattoo, fat, etc) with laser treatment
[C20: from light amplification by stimulated emission of radiation]

Laser

(ˈleɪzə)
n
trademark a type of dinghy, designed to be sailed by one person

la•ser

(ˈleɪ zər)

n.
a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms and causing them to radiate their energy in phase.
Compare maser.
[1955–60; l(ightwave) a(mplification by) s(timulated) e(mission of) r(adiation)]
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la·ser

(lā′zər)
A device that emits a very narrow and intense beam of light or other radiation. The light is generated by exciting the atoms of a medium, such as a crystal, gas, or liquid. The color of laser light depends on the level to which the atoms of the medium become excited. Lasers are used for many purposes, such as cutting hard substances and destroying diseased tissue.
Did You Know? A laser emits a thin, intense beam of light that can travel long distances without diffusing or spreading out very much. Almost any light beam consists of many waves traveling in roughly the same direction. In laser light, the waves are all precisely in step with each other. Such light is called coherent. Lasers produce coherent light through a process called stimulated emission. The laser contains a chamber in which atoms of a medium such as a synthetic ruby rod or a gas are excited to a high energy level. When a light wave of the correct frequency is sent through the chamber from an electronic flash tube, it makes the excited atoms emit light that is in step with the original wave. These waves then stimulate other atoms to emit more coherent light. The chamber has mirrors at both ends, so the light travels back and forth, repeatedly stimulating emission. One of the mirrors is partially transparent so that the laser beam can exit from that end.

laser

Any device that can produce or amplify optical radiation primarily by the process of controlled stimulated emission. A laser may emit electromagnetic radiation from the ultraviolet portion of the spectrum through the infrared portion. Also, an acronym for "light amplification by stimulated emission of radiation."
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.laser - an acronym for light amplification by stimulated emission of radiationlaser - an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light
optical device - a device for producing or controlling light
photocoagulator - surgical instrument containing a laser for use in photocoagulation
Translations
أشِعَّة ليزرلِيّزَرْ
laserlaserový
laserlaser-
laser
laser
lézer
leysigeislileysirleysir, leysigeisli
レーザー
레이저
lazerinis spausdintuvaslazeris
lāzera-lāzers
laser
laserlaserový
laser
laser
แสงเลเซอร์
la-delaser

laser

[ˈleɪzəʳ]
A. Nláser m
B. CPD laser beam Nrayo m láser
laser gun Npistola f de rayos láser
laser printer Nimpresora f láser
laser surgery Ncirujía f con láser

laser

[ˈleɪzər]
nlaser m
modif [technology] → laser inv; [surgery, treatment] → laser inv laser lightlaser beam nrayon m laserlaser disc laser disk ndisque m laserlaser disc player nplatine f laserlaser light nlumière f laserlaser printer nimprimante f laserlaser show nspectacle m laser

laser

nLaser m; (Comput: = printer) → Laserdrucker m

laser

in cpdsLaser-;
laser beam
nLaserstrahl m
laser disc
nLaserdisc f, → Laserdisk f
laser gun
nLaserkanone for -pistole f
laser medicine
nLasermedizin f
laser printer
nLaserdrucker m
laser show
nLasershow f
laser surgery
laser technology
nLasertechnik f
laser weapon
nLaserwaffe f

laser

[ˈleɪzəʳ] nlaser m inv

laser

(ˈleizə) noun
(an instrument that produces) a narrow and very intense beam of light. The men were cutting the sheets of metal with a laser; (also adjective) a laser beam.
ˈlaser printer noun

laser

لِيّزَرْ laser laser Laser λέιζερ láser laser laser laser laser レーザー 레이저 laser laser laser laser лазер laser แสงเลเซอร์ lazer laser 激光

la·ser

n. laser.
1. sigla del inglés “Light Amplification by Stimulated Emission of Radiation” (amplificación de la luz por estimulación de emisión de radiación);
2. bisturí microquirúrgico usado en la cauterización de tumores.

laser

n láser m
References in periodicals archive ?
Contract notice: Slt / yag laser and multi spot laser 2015th
Two Unique Plating Techniques Combine to Boost IR Gas Sensor and YAG Laser Performance
The new LW-Y Series of YAG Laser Welders weld metal to metal without contact for use in the manufacturing of electronic equipment, electronic components and automobile parts.
Periodontal treatment with an Er: YAG laser compared to scaling and root planing: a controlled clinical study.
I FIRST used the YAG laser in vitreous disorders in 1987 where we described the successful lysing of tractional retinal detachments in sickle cell patients.
The Er: Yag laser can reduce tooth sensitivity in just one treatment although re-treatment may be necessary in time with some patients.
Massey put on small eye patches, and everyone else in the room wore goggles for the IPL -- intense pulsed light -- treatment that would mitigate her pigmentation irregularities and for the Yag laser treatment to tone her neck.
Tenders are invited for Nd Yag Laser with Specific Wavelength
The 1-kW pulsed YAG laser is offered in three versions: the 706 for welding, the 707 for cutting, and the 708 for drilling.
The product is compatible with the highly versatile fundamental wavelength of the YAG laser (1,064 nm), the second harmonic (532 nm) and the third harmonic (355 nm).
Contract notice: Solid-state pulsed nd yag laser for the project cente