Abbreviated Journal Title
Appl. Phys. Lett.
POLYMER; FILTER; Physics, Applied
A polarization-independent phase modulator using two thin homogeneously stratified but orthogonally oriented liquid crystal (LC) gels is demonstrated. In addition to polarization independence and submillisecond response time, the LC gel possesses a much larger phase change and lower operating voltage than the nanosized polymer-dispersed liquid crystal. For a 16 mu m transmissive E48 LC gel, the phase shift exceeds 1 pi at lambda=633 nm with an electric field strength of similar to 11 V-rms/mu m. Potential applications of such a phase modulator for laser beam steering, microlens array, and switchable two- and three-dimensional LC displays are foreseeable.
Applied Physics Letters
Ren, Hongwen; Lin, Yi-Hsin; and Wu, Shin-Tson, "Polarization-independent and fast-response phase modulators using double-layered liquid crystal gels" (2006). Faculty Bibliography 2000s. 6497.