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physical object > artifact > device > instrument > optical device > wavefront modifier > Pockels cell

Pockels cell comparison table

Subject	has wavefront modification	has definition	is a kind of
wavefront modifier	shape, polarization or wavelength	A device which modifies the wavefront shape, polarization or wavelength	optical device
Pockels cell	polarization	An electro-optic crystal used as a reversible waveplate by applying alternately high positive and negative voltage.	wavefront modifier

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