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oscillator Dictionary Terms

horizontal drive control
A device that controls the output of a television receiver's horizontal oscillator.
clock
A signal, generated by an oscillator, that provides the means of synchronization of operations in a data communications...
Kerr effect
The Kerr effect, named after the physicist John Kerr who first observed it in 1875, is a nonlinear optical phenomenon where...
oscillator
 vibrational transition
A vibrational transition refers to a change in the vibrational energy of a molecule. Molecules consist of atoms that are...
leaky mode
In an optical waveguide, a mode whose field decays monotonically for a finite distance in the transverse direction but which...
beat
The signal formed when two signals, such as light waves, of different frequencies are present simultaneously in a nonlinear...
crystal oscillator
An oscillator that uses a piezoelectric crystal to control its frequency.
local oscillator laser
In coherent optical communications systems, a laser used at the receiving end to produce a steady wave that is combined with...
intermediate frequency
In a heterodyne optical receiver, the frequency that is the difference between that of an incoming laser signal and that of...
optical parametric oscillator
A laser-pumped crystal with nonlinear optical properties inside of an optical resonator in which the output generates...
resonator
A resonator is a device or system that exhibits resonance, which is a phenomenon that occurs when an external force or...
Fabry-Perot laser
A laser oscillator in which two mirrors are separated by an amplifying medium with an inverted population, making a...
homodyne receiver
A type of receiver utilizing a local oscillator phase-locked to the incoming signal.
injection seeding
The use of a small ultrastable master oscillator (a diode-pumped Nd:YAG laser) to achieve single-frequency operation of a...
trapped plasma avalanche-triggered transit
Oscillator device composed of a semiconducting diode in a coaxial resonating cavity. When the biasing current is applied to...
parametric oscillator
A device using a parametric amplifier inside a resonant optical cavity to generate a frequency-tunable coherent beam of...
damping
Continuous conversion of oscillatory energy into heat, relative to time or distance.
klystron
A thermionic tube that has a velocity-modulated electron stream and that may be used as a microwave amplifier or oscillator.
Lorentz oscillator model
The Lorentz oscillator model is a theoretical model used in physics to describe the response of a charged particle (such as...
lock-in amplifier
A lock-in amplifier is a specialized electronic instrument used to extract and measure small signals embedded in noise or...
crystal oven
A temperature-controlled container used to stabilize the temperature and resonant frequency of a crystal found in a...
lasing medium
The material that produces stimulated emission from within a laser oscillator. Laser gain media may vary from...
laser oscillator
Contains the light or beam path within a laser device. The oscillator uses reflective optical components that are oriented...
phase-locked loop
A circuit that uses feedback to synchronize the phase of a voltage-controlled oscillator with the phase of an incoming or...
backward-wave oscillator
An amplifying device with a wide tuning range in which an electron gun sends a beam of electrons into a slow-wave structure....
Doppler-spread imaging
An imaging process, similar to specific Doppler mapping radar techniques, that utilizes a laser, an optical imaging system,...
heterodyne receiver
A type of receiver that uses a local oscillator at a frequency deliberately offset from that of the incoming signal. It is...
coherent communications
A fiber optic communications system that works on the principles of homodyning or heterodyning. The transmitting laser...
quenching
The inhibition or elimination of one process by another process. The stimulated emission of a laser oscillator can be...
laser head
Contains elements which produce lasing., e.g. gain medium, oscillator mirrors as well as housing.
radiation mode
A mode in an optical waveguide whose fields are transversely oscillatory everywhere external to the waveguide. It exists...
parametric amplification
Means of amplifying optical waves whereby an intense coherent pump wave is made to interact with a nonlinear optical crystal...

(33 results found)

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