Oscillators – Molecular or particle resonant type
Patent
1975-01-02
1976-01-27
Sikes, William L.
Oscillators
Molecular or particle resonant type
350319, H01S 302
Patent
active
039355454
ABSTRACT:
Self-focusing damage caused by diffraction in laser amplifier systems may be minimized by appropriately tailoring the input optical beam profile by passing the beam through an aperture having a uniform high optical transmission within a particular radius r.sub.o and a transmission which drops gradually to a low value at greater radii. Apertures having the desired transmission characteristics may readily be manufactured by exposing high resolution photographic films and plates to a diffuse, disk-shaped light source and mask arrangement.
REFERENCES:
patent: 3362285 (1968-01-01), Hora
Campillo et al., Diffraction Effects in the Design of High-Power Laser Systems, Appl. Phys. Lett., Vol. 23, No. 2, (July 15, 1973), pp. 85-87.
Campillo Anthony J.
Newnam Brian E.
Shapiro Stanley L.
Terrell, Jr. N. James
Carlson Dean E.
Sikes William L.
The United States of America as represented by the United States
Walterscheid Edward C.
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