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 ?
Nd:YAG (Neodyminum-doped yttrium aluminium garnet) Laser, or acceptable alternate meeting the following minimum specifications:
Fotona4D uses both Er:YAG and Nd:YAG wavelengths and four distinct modes of treatment: SmoothLiftin(TM), FRAC3</a>, PIANO and SupErficial(TM), all harnessed for aesthetic use in concert to combat facial aging.
At 74% smaller than the 100W Nd:YAG marking unit, the 7510 enables a far easier integration into packaging lines and equipment.
Bu calismanin amaci rozasenin eritem ve telanjiyektazi lezyonlarinda uzun atimli Nd:YAG lazerin etkinligini arastirmaktir.
By comparison, the Nd:YAG laser penetrates 2 to 5 mm into tissue, it has caused concern about the risk of collateral damage in oral sites where bone and other hard tissue are within the range of energy.
However, less heating occurs in adjacent tissues than with other lasers that have lower absorption coefficients (diode and Nd:YAG lasers).
17-20,35) In a recent sample size abstract, adjunctive use of the Nd:YAG laser resulted in histological evidence of new cementum and a new connective tissue attachment.
Cynosure's products include a broad range of laser and other light-based energy sources, including Alexandrite, pulsed dye, Nd:YAG and diode lasers, as well as intense pulsed light.
2], Nd:YAG, and Nd:glass lasers and laser systems for industrial applications.
In order to cover the desired power range of 1 W to 1000 W, we perform the nonlinearity measurements using a Nd:YAG laser at 1.
Although excimer gas lasers remain popular for certain applications, the majority of ablation systems incorporate Nd:YAG solid-state technology.