= Parametric process (optics)
{wiki=Parametric_process_(optics)}
In optics, a parametric process refers to a nonlinear optical phenomenon in which the properties of a light beam are modified by interaction with a nonlinear medium. This interaction often involves the generation of new frequencies of light, typically through processes such as parametric amplification or parametric down-conversion. \#\#\# Key Concepts: 1. **Nonlinear Medium**: A material in which the response to an electric field (or light) is not linear.
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