High power laser radiation conveying device utilizing variable section fiber optics
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United States of America Patent
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-
Jun 4, 1985
Grant Date -
N/A
app pub date -
Mar 24, 1982
filing date -
Mar 24, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device for transferring the energy emitted by a high power laser onto a target characterized in that it comprises two guides of optical fibre having a step index refraction distribution and at least a plastic material coating. The first guide, stiffly coupled to the laser source, is a variable section fibre with an input face of larger diameter. The second guide is a uniform or variable section fibre with a larger diameter near the output terminal. The two guides are joined by a low leakage optical fibre connector, and between them an adapter can be interposed if the output section of the first guide of fibre does not coincide with the input section of the second guide of fibre. The variable section fibre can be drawn from a pre-molded or melted material, with the speed controlled by an electronic circuit. Different kinds of pots can be utilized in order to obtain the fibre plastic coating.
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