1D/2D switchable grating based on field-induced polymer stabilized blue phase liquid crystal

We present a 1D/2D switchable grating based on field-induced polymer stabilized blue phase liquid crystal (PSBPLC). For ID grating, the diffraction efficiency of the first order is 37.2% and the phase modulation depth of the ID grating can achieve 2 pi. For 2D grating, more than 90% of light intensity is distributed to the surrounding orders of zero order and the phase modulation depth is about 3.67 pi. Furthermore it shows fast phase modulation and 1D/2D switching time. (C) 2012 American Institute of Physics. [doi:10.1063/1.3680875]