A unit of power (equivalent to one Joule per second) used to express laser power.
Watt per cm2
A unit of irradiance used in measuring the amount of power per area of absorbing surface or per area of CW laser beam.
A sinusoidal undulation or vibration. A form of movement by which all radiant electromagnetic energy travels.
A surface connecting all field points of electromagnetic energy that are equidistant from the source.
A device (e.g., optical fiber) that confines or guides electromagnetic waves along a path defined by the construction of the guide.
The distance between successive peaks, troughs, or identical parts of a wave, measured in nanometers or microns. Equal to the speed of the wave divided by its frequency.
The number of complete wave cycles of an electromagnetic field that exist in a given distance of linear space, expressed in reciprocal centimeters (cm-1).
A piece of glass with plane parallel sides that admits light into or through an optical system and excludes dirt and moisture.
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