Cc. Bowley et al., Multiple gratings simultaneously formed in holographic polymer-dispersed liquid-crystal displays, APPL PHYS L, 76(5), 2000, pp. 523-525
We report single-layer holographic polymer-dispersed liquid-crystal materia
ls with multiple reflection and/or diffraction gratings. Three switchable g
ratings are observed in a single film formed in a three-beam interference p
attern. Two reflection gratings and one transmission grating are formed, co
rresponding to each of the three possible two-beam interference fringes. We
present scanning electron microscopy and electro-optic results which are i
n good agreement with our model based on matrix methods and coupled-wave th
eory. (C) 2000 American Institute of Physics. [S0003-6951(00)00805-6].