In-plane switching of cholesteric liquid crystals for visible and near-infrared applications.

We have investigated the in-plane switching of cholesteric liquid crystals for reflective wavelength shifters for visible and near-infrared applications. These devices are based on the elongation of the cholesteric pitch by an electric field perpendicular to the helical axis. The transmission notch-reflection peak position can be tuned continuously to a longer wavelength (redshift) by application of an in-plane electric field. The helix is completely unwound when the electric field is higher than the cholesteric-to-nematic transition field, and the sample is transformed to a transparent state. We have investigated the electro-optic performance of in-plane switching of cholesteric samples and developed a simple phenomenological model to describe the underlying electro-optic phenomena.

[1]  J. W. Doane,et al.  Control of reflectivity and bistability in displays using cholesteric liquid crystals , 1994 .

[2]  W. J. Harper.  Voltage Effects in Cholesteric Liquid Crystals , 1966 .

[3]  O. Lavrentovich,et al.  Director Structures of Cholesteric Diffraction Gratings , 2001 .

[4]  Hajime Nakamura.  A Model of Image DiSplay in the Optimized Overdrive Method for Motion Picture Quality Improvements in Liquid Crystal Devices : Optics and Quantum Electronics , 2001 .

[5]  G. Crawford,et al.  Enhanced dynamic response of the in-plane switching liquid crystal display mode through polymer stabilization , 1999 .

[6]  R. Meyer.  EFFECTS OF ELECTRIC AND MAGNETIC FIELDS ON THE STRUCTURE OF CHOLESTERIC LIQUID CRYSTALS , 1968 .

[7]  Philip J. Bos,et al.  Cholesteric Gratings with Field-Controlled Period , 1997 .

[8]  Liang-Chy Chien,et al.  Structure and morphology of polymer-stabilized cholesteric diffraction gratings , 2000 .

[9]  A. Hochbaum,et al.  51.3: Cholesteric Color Filters: optical Characteristics, Light Recycling, and Brightness Enhancement , 1999 .

[10]  Electro-optical characteristics and switching behavior of a twisted nematic liquid crystal device based upon in-plane switching , 2002 .

[11]  Peter Palffy-Muhoray,et al.  Low Threshold Lasing in Cholesteric Liquid Crystals , 2001 .

[12]  Philip J. Bos,et al.  Multidimensional Alignment Structure for the Liquid Crystal Director Field , 2000 .

[13]  Frederic J. Kahn,et al.  Electric-Field-Induced Color Changes and Pitch DILATION in Cholesteric Liquid Crystals , 1970 .

[14]  J. R. Hansen,et al.  Liquid-crystal media for electron-beam recording , 1968 .

[15]  L. Chien,et al.  POLYMER-STABILIZED DIFFRACTION GRATINGS FROM CHOLESTERIC LIQUID CRYSTALS , 1998 .

[16]  Lu,et al.  Bragg reflection from cholesteric liquid crystals. , 1995, Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics.

[17]  R. Meyer.  DISTORTION OF A CHOLESTERIC STRUCTURE BY A MAGNETIC FIELD , 1969 .