Laser (redirected from Microlaser)

laser /la·ser/ (la´zer) a device that transfers light of various frequencies into an extremely intense, small, and nearly nondivergent beam of monochromatic radiation in the visible region, with all the waves in phase; capable of mobilizing immense heat and power when focused at close range, it is used as a tool in surgery, in diagnosis, and in physiological studies.

Relative positions of various types of lasers on the electromagnetic spectrum.

---

argon laser  a laser with ionized argon as the active medium, whose beam is in the blue and green visible light spectrum; used for photocoagulation.

carbon-dioxide laser  a laser with carbon dioxide gas as the active medium, which produces infrared radiation at 10,600 nm; used to excise and incise tissue and to vaporize.

dye laser  a laser with organic dye as the active medium, whose beam is in the visible light spectrum.

excimer laser  a laser with rare gas halides as the active medium, whose beam is in the ultraviolet spectrum and penetrates tissues only a short distance; used in ophthalmological procedures and laser angioplasty.

helium-neon laser  a laser with a mixture of ionized helium and neon gases as the active medium, whose beam is in the red visible light spectrum; used as a guiding beam for lasers operating at nonvisible wavelengths.

krypton laser  a laser with krypton ionized by electric current as the active medium, whose beam is in the yellow-red visible light spectrum; used for photocoagulation.

KTP laser  one in which a beam generated by a neodymium:YAG laser is directed through a potassium titanyl phosphate crystal to produce a beam in the green visible spectrum; used for photoablation and photocoagulation.

neodymium:yttrium-aluminum-garnet (Nd:YAG) laser  a laser whose active medium is a crystal of yttrium, aluminum, and garnet doped with neodymium ions, and whose beam is in the near infrared spectrum at 1060 nm; used for photocoagulation and photoablation.

potassium titanyl phosphate laser  KTP l.

---

la·ser (lzr)

n.

Any of several devices that convert incident electromagnetic radiation of mixed frequencies to discrete frequencies of highly amplified and coherent ultraviolet, visible, or infrared radiation; used in surgery to cut and dissolve tissue.

---

Laser

A device that concentrates electromagnetic radiation into a narrow beam and treats tissue quickly without heating surrounding areas.

Mentioned in: Arthroscopic Surgery

---

laser,

n acronym for light amplification by stimulated emission of radiation.

Laser.

---

laser,

n a high-energy coordinated light source used in surgery, including the removal of the hard tissues and soft tissues of the periodontium.

laser whitening (bleaching),

n a process for bleaching teeth whereby a bleaching powder or other agent is applied to the teeth and then activated by laser light.

---

laser

a device which generates an extremely intense, small and nearly nondivergent beam of monochromatic radiation in the visible region, with all the waves in phase; capable of mobilizing immense heat and power when focused at close range, it is used as a tool in surgery, in diagnosis, and in physiological studies. Laser is an acronym for light amplification by stimulated emission of radiation.

Used also as a modern version of acupuncture and considered to be the biggest breakthrough in that technology for 5000 years. It provides a quick, painless and noninvasive method of point stimulation.

---

argon laser

used in ophthalmic surgery and in photodynamic surgery of the skin.

carbon dioxide laser

used in microsurgery and ophthalmic procedures.

low-energy laser therapy

used for wound healing and pain relief; includes visible red helium-neon lasers, invisible infrared gallium-arsenide lasers and gallium-aluminum-arsenid lasers.

laser therapy

in acupuncture the application of low intensity laser to acupuncture points.