Ronald A. Malt, M.D.
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Coherent visible light from an optical maser (laser) can be focused through a conventional optical system to a spot approaching ⅓ µ in diameter. This enormous concentration produces a power density greater than that of radiant energy at the surface of the sun; yet, minute targets subjected to the flux can be heated with no effect on thermal equilibrium in surrounding tissue.
Actual effects on a biological object depend on the absorbent properties at a given wavelength as well as the intensity of incident radiation. Since pigmented areas are affected far more than reflective or transparent ones, focal lesions can
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Malt RA. Microsurgery and Spectroscopy with the Maser.. Ann Intern Med. 1964;60:726–727. doi: 10.7326/0003-4819-60-4-726_2
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Published: Ann Intern Med. 1964;60(4):726-727.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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