Carbon monoxide laser machining system
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United States of America Patent
Stats
-
Mar 27, 2018
Grant Date -
Feb 23, 2017
app pub date -
Aug 19, 2015
filing date -
Aug 19, 2015
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Laser-machining apparatus includes a carbon monoxide (CO) laser emitting a beam of laser-radiation having forty-four different wavelength components and optical elements for delivering the radiation to workpiece. An acousto-optic modulator is provided for modulating the beam on the workpiece. A birefringent plate is provided in the beam transported to the workpiece for randomly polarizing radiation incident on the workpiece. A minimum distance of the workpiece from the laser, and the number of different-wavelength components in the laser beam provides that no optical isolator is required for preventing feedback of radiation into the laser.
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