Oscillators – Molecular or particle resonant type
Patent
1975-07-16
1977-06-28
Sikes, William L.
Oscillators
Molecular or particle resonant type
219121L, H01S 308
Patent
active
040328619
ABSTRACT:
A high gain optically pumped laser device includes a mask having cut-out portions defining a given pattern disposed in the resonant optical cavity defined between end mirrors at opposite ends of the laser material. Each of the end mirrors is equivalent to an optically flat reflecting surface such that only cross-sectional portions in the laser material similar to the pattern are stimulated to emit output laser radiation. This stimulated emission has a high energy density and may be directly radiated to a target surface to alter the surface in a manner corresponding to the given pattern. The alteration may take the form of actual vaporization, heating, or oxidation of portions of the surface. Thus carefully controlled engraving type processes or other processes involving a physical alteration of a surface such as the drilling of square or unusually shaped holes as determined by the pattern can be carried out.
REFERENCES:
patent: 3293565 (1966-12-01), Hardy
patent: 3316501 (1967-04-01), Collins et al.
patent: 3379998 (1968-04-01), Soules et al.
patent: 3437942 (1969-04-01), Maiman
patent: 3657510 (1972-04-01), Rothrock
Humphreys Harrie M.
Sikes William L.
Union Carbide Corporation
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