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A device that generates an intense beam of coherent monochromatic light (or other electromagnetic radiation) by stimulated emission of photons from excited atoms or molecules. Lasers are used in drilling and cutting, alignment and guidance, and in surgery; the optical properties are exploited in holography, reading bar codes, and in recording and playing compact discs.
- ‘I had to look at the red light of the laser and it was like being on hallucinogenic drugs.’
- ‘It has led to computers, lasers and nuclear reactors, and it tells us why the Sun shines and why the ground beneath our feet is solid.’
- ‘It is this property that lies behind the technological device of the laser.’
- ‘This pattern creates a hologram that you can see by illuminating the plate with a laser.’
- ‘However, an increasing number of archaeologists are adopting lasers as efficient measuring devices.’
- ‘I looked at the base and saw stands with lasers on them and the oversized slugs with beam cannons.’
- ‘The coating absorbs some of the laser's light, a percentage of which is made into a photocurrent.’
- ‘This lattice can trap the neutral atoms in potential wells because the electric fields of the lasers induce a dipole moment in the atom.’
- ‘This spurred him to work on lasers, a necessary piece of equipment for his measurement.’
- ‘Microsurgery and keyhole surgery are common place now - as is the use of lasers in surgery.’
- ‘A few were beaming their lasers at him, changing him until he could no longer walk or move.’
- ‘Yet it was not so long ago that lasers were deemed a solution in search of a problem.’
- ‘A laser is a beam of light radiation, which delivers intense energy to a specific area of skin.’
- ‘It passes through the beam splitter the way it came, and goes straight back into the laser.’
- ‘The structure has potential for the development of active optical devices such as lasers and passive components.’
- ‘Other possibilities include the use of lasers and strobe lights which temporarily blind or confuse a suspect.’
- ‘Powered by infrared lasers, the shiny surface reflects and focuses this laser beam into a ring.’
- ‘When lasers and optical fibres came together they revolutionised communications.’
- ‘The final piece is shown in a light box, with holes created by lasers letting light shine through layers of coloured plastics.’
- ‘The lasers talk to the computer, which moves a blocking device to intercept the puck.’
[withobject] Treat or remove (something) using a laser, especially as part of surgery.‘I've got to get my eyes lasered again’‘he has had tattoos lasered off his chest’
- ‘I fully intend to have my face lasered soon.’
- ‘While he was lasering, he remarked the patient had started bleeding.’
- ‘It was a small matter of lasering away the areas of bad cells that had been pinpointed.’
- ‘Every few years, my test results would require freezing, or burning, or lasering mutating pre-cancerous cells away.’
- ‘Having your eyes lasered "is just like any surgery, and that means there will be risks".’
- ‘If you feel like getting hair lasered off, this is the place for you.’
- ‘The surgery involves lifting a small flap of corneal tissue and lasering onto the deeper cornea beneath.’
- ‘Has lasering the lines from his face really improved him?’
- ‘This isn't a tattoo you can have lasered off.’
- ‘What is the recovery time after having a tattoo lasered off?’
1960s: acronym from light amplification by stimulated emission of radiation, on the pattern of maser.
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