Method and apparatus for reducing diffraction-induced damage in high power laser amplifier systems
Patent
·
OSTI ID:7286576
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 0/ 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. 5 Claims, 2 Drawing Figures.
- Assignee:
- Energy Research and Development Administration
- Patent Number(s):
- US 3935545
- OSTI ID:
- 7286576
- Resource Relation:
- Patent File Date: Filed date 2 Jan 1975
- Country of Publication:
- United States
- Language:
- English
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· Sov. J. Quant. Electron. (Engl. Transl.); (United States)
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OSTI ID:7286576