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TEA CO2 Lasers Cut into Excimer Market

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ROGER SANDWELL, LIGHTMACHINERY INC.

Transversely excited atmosphere carbon dioxide (TEA CO2) lasers are unique in that they offer much shorter pulses and higher peak powers than conventional CO2 lasers. These properties allow TEA CO2 lasers to emulate the better-known — but higher-cost — ultraviolet excimer lasers for some precision processing applications of polymer materials. For manufacturing engineers in the medical device, electronics and printed circuit industries who in the past may have relied on excimer lasers for polymer processing, TEA CO2 lasers can offer lower costs, higher throughput and simpler...Read full article

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    Photonics.com
    Jun 2016
    GLOSSARY
    transversely excited atmosphere carbon dioxide laser
    Abbreviated TEA CO2 laser. A gas laser that provides shorter pulses and higher peak powers than conventional CO2 lasers. The electrical excitation pulse occurs transversely to the optical axis between two electrodes that are placed along the length of the laser cavity (similar to the configuration of an excimer laser). The short separation distance between the electrodes allows a stable pulsed discharge to be generated in atmospheric pressure gas, thereby exciting a high concentration of CO2...
    excimer laser
    A rare-gas halide or rare-gas metal vapor laser emitting in the ultraviolet (126 to 558 nm) that operates on electronic transitions of molecules, up to that point diatomic, whose ground state is essentially repulsive. Excitation may be by E-beam or electric discharge. Lasing gases include ArCl, ArF, KrCl, KrF, XeCl and XeF.
    CO2 laserslasersindustrialprocessingRoger SandwellLightMachinerytransversely excited atmosphere carbon dioxide laserTEA CO2 laserexcimer laserheat-affected zoneHAZwire strippingFeatures

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