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Eye Safety in the Laser Lab

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To interlock or not to interlock?

Ken Barat, Laser Safety Officer, Lawrence Berkeley National Laboratory

Thinking about installing a laser safety interlock on the door to your Class 4 laser lab? If so, you might want to give that decision some careful consideration. A safety interlock that stops the laser or blocks the laser beam (with a shutter) if the lab door is opened is only one of three solutions for Class 4 controlled areas described in ANSI Z136.1, ”Safe Use of Lasers.” The other two are a door interlock that allows entry by authorized personnel without interrupting the laser (called a defeatable interlock) and procedural controls such as an external indication that a laser is operating...Read full article

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    Published: May 2007
    Glossary
    shutter
    A mechanical or electronic device used to control the amount of time that a light-sensitive material is exposed to radiation.
    FeaturesLaser Beamlaser safety interlockShutterLasers

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