News tagged with laser

Related topics: light · laser beam · atoms · wavelength · nature photonics

In-office angiolytic laser effective for vocal polyps

(HealthDay)—In-office angiolytic laser procedures are effective for vocal fold polyps, though with occasional occurrence of minor adverse events, according to a study published online Jan. 18 in JAMA Otolaryngology-Head ...

15 hours ago
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Laser

A laser is a device that emits light (electromagnetic radiation) through a process called stimulated emission. The term laser is an acronym for light amplification by stimulated emission of radiation. Laser light is usually spatially coherent, which means that the light either is emitted in a narrow, low-divergence beam, or can be converted into one with the help of optical components such as lenses. Typically, lasers are thought of as emitting light with a narrow wavelength spectrum ("monochromatic" light). This is not true of all lasers, however: some emit light with a broad spectrum, while others emit light at multiple distinct wavelengths simultaneously. The coherence of typical laser emission is distinctive. Most other light sources emit incoherent light, which has a phase that varies randomly with time and position.

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