Spectra-Physics Tsunami - Laser Safety Guidelines; Precautions for Class IV High Power Lasers

2-1
Chapter 2 Laser Safety
Precautions for the Safe Operation of
Class IV-High Power Lasers
• Wear protective eyewear at all times; selection depends on the wave-
length and intensity of the radiation, the conditions of use, and the
visual function required. Protective eyewear vendors are listed in the
Laser Focus World, Lasers and Optronics, and Photonics Spectra
buyer's guides. Consult the ANSI or ACGIH standards listed at the end
of this section for guidance.
• Maintain a high ambient light level in the laser operation area. This
keeps the eye's pupil constricted, thus reducing the possibility of eye
damage.
• Keep the protective cover on the laser at all times.
• Avoid looking at the output beam; even diffuse reflections are hazard-
ous.
• Avoid wearing jewelry or other objects that may reflect or scatter the
beam while using the laser.
• Use an infrared detector or energy detector to verify that the laser
beam is off before working in front of the laser.
• Operate the laser at the lowest beam intensity possible, given the
requirements of the application.
• Expand the beam whenever possible to reduce beam power density.
• Avoid blocking the output beam or its reflection with any part of your
body.
The Tsunami
®
and its pump laser are Class IV-High Power Lasers,
whose beams are, by definition, safety and fire hazards. Take precau-
tions to prevent exposure to direct and reflected beams. Diffuse as well
as specular reflections cause severe skin or eye damage.
Danger!
Because the Tsunami laser emits cw and pulsed infrared radiation, it is
extremely dangerous to the eye. Infrared radiation passes easily through
the cornea, which focuses it on the retina, where it can cause instanta-
neous permanent damage.
Danger!
Laser Radiation