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What (who) is parametric program - definition
Parametric programming
Parametric programming is a type of mathematical optimization, where the optimization problem is solved as a function of one or multiple parameters. Developed in parallel to sensitivity analysis, its earliest mention can be found in a thesis from 1952.
Parametric oscillator
HARMONIC OSCILLATOR WHOSE PARAMETERS OSCILLATE IN TIME
Parametric resonance; Parametric amplifier; Parametric oscillation; Parametric generator
A parametric oscillator is a driven harmonic oscillator in which the oscillations are driven by varying some parameter of the system at some frequency, typically different from the natural frequency of the oscillator. A simple example of a parametric oscillator is a child pumping a playground swing by periodically standing and squatting to increase the size of the swing's oscillations.
Optical parametric oscillator
![KTP]] crystals in an OPO](https://commons.wikimedia.org/wiki/Special:FilePath/OPO Crystals.jpg?width=200 "KTP]] crystals in an OPO")
PARAMETRIC OSCILLATOR THAT OSCILLATES AT OPTICAL FREQUENCIES
Optical Parametric Oscillator; Optical parametric oscillation
An optical parametric oscillator (OPO) is a parametric oscillator that oscillates at optical frequencies. It converts an input laser wave (called "pump") with frequency \omega_p into two output waves of lower frequency (\omega_s, \omega_i) by means of second-order nonlinear optical interaction.
