Abbreviated Journal Title
Appl. Phys. Lett.
DEFORMATION; MODULATORS; AMPLITUDE; POLYMER; VOLTAGE; Physics, Applied
Dual-frequency addressed hybrid-aligned nematic (HAN) liquid crystal cell is demonstrated as a variable optical attenuator at 1.55 mum wavelength. By controlling the low- and high-frequency electric field, the dual-frequency liquid crystal (DFLC) molecules can be reoriented parallel or perpendicular to the substrates so that the maximum obtainable phase modulation is doubled. In comparison to a homogeneous cell, the DFLC HAN cell shows a lower operating voltage and faster response time. Furthermore, the DFLC HAN cell exhibits three stable states that have some applications such as ternary photonic devices.
Applied Physics Letters
Lu, Yan-Qing; Liang, Xiao; Wu, Yung-Hsun; Du, Fang; and Wu, Shin-Tson, "Dual-frequency addressed hybrid-aligned nematic liquid crystal" (2004). Faculty Bibliography 2000s. 4564.