Most lasers in use in the Institute of Physical and Theoretical Chemistry are classified as class 4 lasers according to national regulations. This means that they can be very dangerous for eyes and skin not only by direct irradiation, but also by diffusely scattered irradiation, and that they can induce fire or explosion.
Rules for experimental set-ups:
Avoid laser beams in eye height
Keep the beam path short and simple
Use beam dumps
Consider reflections. Use appropriate shields if they cannot be avoided
Blacken reflective surfaces
Do not use loose optical components in your set-up
Instruct all people entering your laser lab (students, guests, colleagues etc.)
Switch on the warning lights
Do not wear objects with reflective surfaces (watches, jewelry, belt buckles etc.)
Be careful when using tools
If you have to bend down, turn around and close your eyes
In case of an accident immediately consult an ophthalmologist.
In case of a severe accident call for help. The emergency number is 0-112 and can be called from any phone (even in the elevator). In case of doubts or questions contact your laser safety officer. Also report there in case of an accident.