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Conduction Via Tracks Ionized by Laser

IP.com Disclosure Number: IPCOM000096428D
Original Publication Date: 1963-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 32K

Publishing Venue

IBM

Related People

Anderson, JL: AUTHOR

Abstract

Ionized tracks created by laser beams through an ionizable atmosphere can be used to direct electrical currents to a workpiece, much as if the laser beams were wires.

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Conduction Via Tracks Ionized by Laser

Ionized tracks created by laser beams through an ionizable atmosphere can be used to direct electrical currents to a workpiece, much as if the laser beams were wires.

A special container holds the workpiece in an ionizable atmosphere such as cesium vapor under suitable conditions of temperature and pressure to be locally and selectively ionizable by laser beams.

The back wall of the container, with respect to the laser, is a grounded plate
1. Side walls 2 and 3 are insulators. Front wall 4 is a transparent conductor of such construction that it passes the laser beam and provides electrical contact with the ionizable atmosphere. Front wall 4 is connected to a source of static potential such as capacitor 5 connected to power source 6. Upon activation, laser 7 sends a beam through the container, ionizing a defined small volume of ionizable vapor around the beam. Front wall 4, which is at the potential governed by charged capacitor 5, discharges onto the ionized track which carries the current through the container to back wall 1.

Coincident selection techniques are carried out by creating two ionized tracks at substantially right angles, with the tracks not quite intercepting. A positive voltage is impressed upon the first track 8. A negative voltage is impressed upon the other track 9. At the point where tracks 8 and 9 most nearly approach, there is such a voltage difference caused by the additive nature of the impressed volta...