Analytical, Diagnostic and Therapeutic Techniques, and Equipment

Lasers

An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.

National Library of MedicineMedical Subject Headings2026

Structured Summary

Abstract

An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.

MeSH Record

Classification

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Synonyms

16 entry terms
  • Laser
  • Continuous Wave Lasers
  • Masers
  • Pulsed Lasers
  • Q-Switched Lasers
  • Continuous Wave Laser
  • Laser, Continuous Wave
  • Laser, Pulsed
  • Laser, Q-Switched
  • Lasers, Continuous Wave
  • Lasers, Pulsed
  • Lasers, Q-Switched
  • Maser
  • Pulsed Laser
  • Q Switched Lasers
  • Q-Switched Laser

MeSH Record

Aspects Covered

6 allowable subheadings

Indexed with the subheadings adverse effects, classification, history, standards, statistics & numerical data, supply & distribution.

MeSH Record

Indexing Annotation

general or unspecified; prefer specifics; laser injuries = LASERS /adv eff + organ / inj but do not coordinate with RADIATION INJURIES or any BURNS term; effect of laser as radiation: coordinate IM with anatomical term, organism or chemical substance / rad eff (IM); LASER THERAPY and LOW-LEVEL LIGHT THERAPY are also available

MeSH Record

History Note

65(63)

MeSH Hierarchy

Tree Numbers

AMA Style

References

  1. National Library of Medicine. Lasers. Medical Subject Headings (MeSH). 2026. Unique ID D007834. http://id.nlm.nih.gov/mesh/2026/D007834
  2. Lasers. In: Wikipedia. https://en.wikipedia.org/wiki/Laser
  3. Lasers. In: Wikidata. https://www.wikidata.org/wiki/Q38867