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Preventing Beam Shifting in a Nitrogen-Dye Laser

IP.com Disclosure Number: IPCOM000046105D
Original Publication Date: 1983-Jun-01
Included in the Prior Art Database: 2005-Feb-07

Publishing Venue

IBM

Related People

Authors:
Arnold, RC [+details]

Abstract

A common problem in dye lasers is the shifting of the beam away from its focused target. Although this problem is intermittent, it is a recurring problem which causes the beam to destroy parts. When using the dye laser to weld, as this author did, optical beam shifting caused the damage of many parts. The beam would be focused on a target and for no apparent reason, it would shift or move off the target. This phenomenon caused damage to both the target area and other adjacent areas. The cause of this optical beam shifting was movement of the dye cell prism, due to the stress and vibration presented by the dye cell tubes. A shim was created to hold the dye cell rigid, which solved the problem. No losses due to optical beams shifting occurred since installing the shim.