Good photon sensitivity, large index modulation and high resolution make monomer in a number of applications such as holographic polymer grating, photonic crystal and lightphasemodulator.
A kind of diffraction element modulating phase information by LC space lightmodulator to get a zoom Fresnel lens, as well as the using of said element to optical imaging system, is introduced.
The diffracted light intensity on axis of a Spatial lightModulator (SLM) with Multi-level Phase Fresnel Zone Plate (MPFZP) is studied by diffraction optical method.