An instrument which measures the heat generated by absorption of the laser beam—another way to measure laser power.
The element providing the electrons for the electrical discharge used to excite the lasing medium.
A laser largely used in industry in which the primary lasing medium is carbon dioxide.
Any area where the occupancy or activity of those within its confines is subject to access control and/or supervision for the purpose of protection from laser radiation hazards.
The bending of light rays toward each other, as by a positive (convex) lens.
A pulse repetition frequency above which the laser is considered to operate as a CW laser. [box]Example: For a short (0.25 s to 10 s) unintentional exposure to nanoseconds (or longer) pulses, the Critical Frequency is 55 kilohertz (kHz) for wavelengths between 400 nanometers (nm) to 1050 nm and 20 kHz for wavelengths between 1050 nm to 1400 nm.[/box]
Maximum flow of electric force in a conductor; in a laser, the point at which further electrical charge will not increase lasing action.