Technical Center: Laser Glossary of Terms
The subject matter or figure imaged by, or seen through, an optical system.
The condition of being non-transparent.
Any location where lasers are used which will be open to operating personnel during laser operation and may or may not specifically restrict entry to observers.
The performance of the laser or laser system over the full range of its intended functions (normal operation). It does not include maintenance or services as defined in this glossary.
The portion of the optic nerve within the eye which is formed by the meeting of all the retinal nerve fibers at the level of the retina.
Optical Cavity (Resonator)
Space between the laser mirrors where lasing action occurs.
A logarithmic expression for the attenuation produced by an attenuating medium, such as an eye protection filter.
A filament of quartz or other optical material capable of transmitting light along its length by multiple internal reflection and emitting it at the end.
The excitation of the lasing medium by the application of light rather than electrical discharge.
Ultraviolet, visible and infrared radiation (0.35-1.4 nm) that falls in the region of transmittance of the human eye.
Lasers A type of laser that derives energy from another light source such as a xenon or krypton flashlamp or other laser source.
Partially reflective mirror in laser cavity which allows emission of laser light.
The energy per second measured in watts emitted from the laser in the form of coherent light.