Definition of Pockels

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Photonics Dictionary

Pockels: In optics, the Pockels effect refers to the phenomenon where the refractive index of a material changes in response to an applied electric field. This effect is utilized in Pockels cells, which are devices commonly used in optics for the manipulation of light polarization.

When an electric field is applied to a material exhibiting the Pockels effect, the refractive index of the material changes, causing a corresponding change in the polarization state of light passing through it. This change in polarization can be used to modulate or control the intensity, phase, or direction of light.

Pockels cells find applications in various areas of optics, including laser technology, telecommunications, optical switching, and modulation. They are particularly useful in devices such as Q-switches, electro-optic modulators, and optical shutters, where rapid and precise control of light properties is required.

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