Laser Safety Checklist

"Laser" is an acronym for "light amplification by stimulated emission of radiation." A laser is a potent tool for a wide variety of industries, including medicine, the military and shopping (as is seen in laser barcodes when checking out at a store). However, certain safety precautions are required before using a laser in any context, especially because of the potential of an eye injury if a laser is shined at a person's face. The Occupational Safety and Health Administration (OSHA) has established control measures that should be checked before lasers are used.

Beam Path

• OSHA has established certain regulations depending on the type of laser. If the laser beam's path is entirely enclosed (such as at a store check-out), then an individual using it does not need to wear any sort of protective clothing. However, if the beam is not entirely enclosed, the person operating it must wear protective clothing and eye protection.

Laser Controlled Area

• Certain types of large lasers (such as those used in scientific experiments or medical procedures) are classified as Class III lasers and they require what OSHA designates as a "laser controlled area." This area must include a "DANGER" sign with the image of a white background and a red laser symbol with black lettering. Additionally, lasers in a laser controlled area may be operated only by a specially trained individual.

Class IV Lasers

• OSHA also has a special safety checklist for Class IV lasers, which are cutting lasers. In addition to having to be in a special laser controlled area like a Class III laser, Class IV lasers must have their controlled area protected by an entryway. Additionally, the beam trap for a Class IV laser must be made of a fire-resistant material.