The removal of any material (e.g., skin tissue, paint, ceramic film, etc.) by means of its interaction with laser energy or power.
To transform radiant energy into a different form, usually with a resultant rise in temperature.
The amount of radiant energy absorbed per unit or path-length.
Abbreviated AEL. The maximum accessible emission level permitted within a particular laser hazard class.
Note: the laser classifications consist of: Class 1, Class 1M, Class 2, Class 2M, Class 3R, Class 3B, and Class 4. Generally speaking, the potential beam hazard level increases in the same order.
A medium in which lasing will take place, rather than absorption, at a given wavelength.
Abbreviation for Accessible Emission Limit.
The angular subtense of a source below which the source can effectively be considered as a point source. The value of alpha min is equal to or less than (≤) 1.5 mrad. Symbol: αmin.
An electrical element in laser excitation which attracts electrons from a cathode. An anode can be cooled directly by water or by radiation.
Anti-reflection coatings, used on the backs of laser output mirrors to suppress unwanted multiple reflections which reduce power.
A single instrument combining the functions of a telescope and a collimator to detect small angular displacements of a mirror by means of its own collimated light.
The rate at which energy (joules per second) is emitted, transferred or absorbed with its measurements described by the unit measurement of watts (W).