Light Amplification by the Stimulated Emission of Radiation --
quantum device that produces coherent light.
Laser trimming
A method for adjusting the value of thin- or thick-film resistors
by using a computer-controlled laser system.
LCD
Liquid Crystal Display -- display device employing light source
and electrically alterable optically active thin film.
Leakage
The loss of all or parts of a useful agent, as of the electric
current that flows through an insulator or the magnetic flux that
passes outside useful flux circuits.
LED
Light-Emitting diode -- semiconducting diode that produces visible
or infrared radiation.
Lewis acid
An electron-pair acceptor.
Lewis base
An electron-pair donor.
Life (lifetime)
The length of time the sensor can be used before its performance
changes.
Limit of detection
The smallest measurable input. This differs from resolution, which
defines the smallest measurable change in input. For a temperature
measurement, this would provide an indication of the lowest
temperature a sensor could generate an output in response to.