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Proceedings Paper

CO2 Laser For The Removal Of Extraaxial Neoplasms
Author(s): Leonard J. Cerullo
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Paper Abstract

Light Amplification by the Stimulated Emission of Radiation results in a release of electromagnetic energy which is unique in that the light energy thus generated is of a single wave length (monochromatic), and the waves are in synchrony in space and time (coherent). The energy is not dampened by dispersion or interference of conflicting electromagnectic fields. Each substance which can be made to laser (laser medium) emits light energy of a wave length specific to itself. In the spectrum of electromagnetic waves, visible light occupies a narrow band. Light in the far infrared spectrum, produced by the carbon dioxide laser, is invisible and is not absorbed by pigmented materials. It can be focused to a fine point with a selenium-germanium lens. On impact with solid or liquid matter, light energy is converted to heat energy. In living tissue, this results in an instantaneous elevation of intracellular water temperture to the boiling point and explosion of the cell to a cloud of smoke. The speed of the process protects adjacent cells by the leidenfrostche or water jacket effect, which insulates the area of intense heat from its surroundings.

Paper Details

Date Published: 28 December 1982
PDF: 6 pages
Proc. SPIE 0357, Lasers in Medicine and Surgery, (28 December 1982); doi: 10.1117/12.976080
Show Author Affiliations
Leonard J. Cerullo, Northwestern University Medical School (United States)

Published in SPIE Proceedings Vol. 0357:
Lasers in Medicine and Surgery
Leon Goldman M.D., Editor(s)

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