تعريف parametric amplifier في الإنجليزية الإنجليزية القاموس.
a sensitive, low-noise amplifier of high-frequency or microwave radio waves that utilizes an inductor or capacitor whose reactance varies periodically at a similar frequency
An optical parametric amplifier, abbreviated OPA, is a laser light source that emits the light of variable wavelengths by an optical parametric amplification process