In order to use laser class 3B and 4, the user needs an authorization.

There are two requirements for obtaining this authorization:

- Completing Laser equipment specific training. All personnel working with lasers of class 3B and 4 must be instructed about laser setup he/ she is going to use and safety measures specific to the laboratory. The laboratory head is responsible for the organization of the equipment specific training, usually given by senior staff.

- Successful completion of the present laser safety training and passing the test.