Fast-response infrared ferroelectric liquid crystal phase modulators
Abbreviated Journal Title
Mol. Cryst. Liquid Cryst.
alignment breaking effect; ferroelectric liquid crystal; IR application; phase modulation; vertical alignment; Crystallography
A high speed phase modulator based on ferroelectric liquid crystal (FLC) is demonstrated. For uniform alignment and pure phase modulation, we propose a new FLC device using a short helical pitch material in a homeotropic alignment. This device is driven by periodic in-plane electrode stripes implemented on the surface of both cell substrates. As a result, we have obtained a large phase modulation (about 2.3 pi at lambda = 1.55 mu m under E = 2.5 V/mu m) and fast response time ( < 200 mu sec). Together with the performance characterization of our device, we discuss the alignment breaking effect which occurs near the edges of operating region.
Molecular Crystals and Liquid Crystals
"Fast-response infrared ferroelectric liquid crystal phase modulators" (2006). Faculty Bibliography 2000s. 6336.