Definitions for Laser
ˈleɪ zərLaser

Princeton's WordNet(3.67 / 3 votes)Rate this definition:

1. laser, optical masernoun

   an acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light

Wikipedia(2.00 / 1 vote)Rate this definition:

1. Laser

   A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The word "laser" is an acronym for "light amplification by stimulated emission of radiation". The first laser was built in 1960 by Theodore H. Maiman at Hughes Research Laboratories, based on theoretical work by Charles Hard Townes and Arthur Leonard Schawlow. A laser differs from other sources of light in that it emits light which is coherent. Spatial coherence allows a laser to be focused to a tight spot, enabling applications such as laser cutting and lithography. Spatial coherence also allows a laser beam to stay narrow over great distances (collimation), enabling applications such as laser pointers and lidar. Lasers can also have high temporal coherence, which allows them to emit light with a very narrow spectrum. Alternatively, temporal coherence can be used to produce ultrashort pulses of light with a broad spectrum but durations as short as a femtosecond. Lasers are used in optical disc drives, laser printers, barcode scanners, DNA sequencing instruments, fiber-optic, semiconducting chip manufacturing (photolithography), and free-space optical communication, laser surgery and skin treatments, cutting and welding materials, military and law enforcement devices for marking targets and measuring range and speed, and in laser lighting displays for entertainment. Semiconductor lasers in the blue to near-UV have also been used in place of light-emitting diodes (LED's) to excite fluorescence as a white light source. This permits a much smaller emitting area due to the much greater radiance of a laser and avoids the droop suffered by LED's; such devices are already used in some car headlamps.

Freebase(2.67 / 9 votes)Rate this definition:

1. Laser

   A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation. Lasers differ from other sources of light because they emit light coherently. Its spatial coherence allows a laser to be focused to a tight spot, and this enables applications like laser cutting and laser lithography. Its spatial coherence also keeps a laser beam collimated over long distances, and this enables laser pointers to work. Laser also have high temporal coherence which allows them to have a very narrow spectrum, i.e., they only emit a single color of light. Their temporal coherence also allows them to emit pulses of light that only last a femtosecond. Lasers have many important applications. They are used in common consumer devices such as DVD players, laser printers, and barcode scanners. They are used in medicine for laser surgery and various skin treatments, and in industry for cutting and welding materials. They are used in military and law enforcement devices for marking targets and measuring range and speed. Laser lighting displays use laser light as an entertainment medium. Lasers also have many important applications in scientific research.

Chambers 20th Century Dictionary(2.67 / 3 votes)Rate this definition:

1. Laser

   lā′ser, n. a gum-resin from North Africa, esteemed by the ancients as a deobstruent and diuretic. [L. laser, juice of laserpitium.]

Editors Contribution(2.00 / 1 vote)Rate this definition:

1. Laser

   The Internet: The Internet is a global communication system for transmitting data across different types of media. It can be described as a global network that connects different networks, whether they are private, public, commercial, academic, or government networks, using wireless technologies or optical fibers. The computer uses the control protocol Transmission / Internet Protocol., which provides it with a host that enables it to access the Internet, and the Internet has raised the standards of regular networks to global standards.

   Submitted by anonymous on August 31, 2020  

Matched Categories

1. • Optical Device

British National Corpus

1. Nouns Frequency

   Rank popularity for the word 'Laser' in Nouns Frequency: #2593

Anagrams for Laser »

1. Earls

2. Lares

3. Rales

4. Reals

How to pronounce Laser?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say Laser in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of Laser in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of Laser in Pythagorean Numerology is: 1

Examples of Laser in a Sentence

1. The Portland Police Bureau:

   Members of the Portland Police Bureau Rapid Response Team( RRT) responded to City Hall to restore order, at least one member of RRT realized that Mr. Kelley had repeatedly directed a laser into the RRT members eyes, causing injury.

2. Robinhood CEO Vlad Tenev:

   Transforming an industry from the inside takes determination, hard work, investment, and a laser focus on the people we want to serve, occasionally there are shortfalls along the way.

3. Professor Wolf:

   We did it on a laboratory scale, we can already create clouds, but not on a macroscopic scale, so you don't see a big cloud coming out because the laser is not powerful enough and because of a lot of technical parameters that we can't yet control.

4. Oscar Munoz:

   We remain laser focused on getting contracts like these for our flight attendants and technicians, we’ll keep working closely with the unions to make that happen.

5. Eric Adams:

   Keechant Sewell is a proven crime fighter with the experience and emotional intelligence to deliver both the safety New Yorkers need and the justice they deserve, chief Sewell will wake up every day laser-focused on keeping New Yorkers safe and improving New York City, and I am thrilled to have New Yorkers at the helm of the NYPD.

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