Abstract
We have designed liquid crystal (LC) shutter of LCPG type with high diffractive efficiency
and transmission rate of more than 99.747% for modulation of non-polar light with wavelength
532 nm and high contrast in this article. Compared to other similar cases, the advantages of
this design include maximization of transmission percent of diffractive element (particularly
first-order diffraction) and minimization of light leakage rate caused by zero-order, and other
unwanted diffractive orders. The conditions have been prepared for using diffractive elements
(gratings) with shorter periods and acquisition of diffraction orders with greater diffraction
angles by benefitting from suitable compounds of LC in the given design. Similarly, required
measures have been taken for the deletion of adverse effects caused by reflection from optic
surfaces so that very appropriate status is prepared for the function of LCPG shutter.