Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Sadeg M. Faris"'
Autor:
Gregory P. Crawford, Bhaskar Sethumadhavan, Chris C. Bowley, Michael J. Escuti, Adam K. Fontecchio, Sadeg M. Faris, Le Li
Publikováno v:
SID Symposium Digest of Technical Papers. 31:774-777
In this paper, we report on multiplexing techniques to create multicolor reflective displays formed in holographic polymer dispersed liquid crystals using a single holographic exposure through spatial color synthesis techniques. We present the electr
Publikováno v:
Color Research & Application. 23:210-220
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 317:221-235
The selective reflection profile of a cholesteric liquid crystal is asymmetric when (a) for light incident parallel to the cholesteric helix axis, the incident polarization vector, E, is at an angle other than 45° to the molecular director at the fi
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:237-248
We report for the first time the results of theoretical study on the optical properties of single layer non-absorptive broadband cholesteric liquid crystals (BBCLC) polarizers. The objective of this study is to understand the effect of material param
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:231-236
A novel approach to optical storage based on layering of cholesteric liquid crystal (CLC) media has been proposed. CLC media have been chosen due to their unique property of selective reflection, wherein a CLC film reflects light of its characteristi
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:289-294
High speed scanning/deflection of monochromatic laser beams is essential to advanced optical systems and require random and or sequential scanning of laser spot over an image plane. We have developed a beam steering device (BSD) based on a polarizati
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:249-254
Dichroic polarizers are used to produce linearly polarized light in direct view displays; however, these elements introduce an inordinate amount of loss. Alternatively, a cholesteric liquid crystal (CLC) film and a quarter-wave plate (QWP) combinatio
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 301:307-312
The polarization crosstalk of cholesteric liquid crystal (CLC) films is studied experimentally and numerically as a function of incidence angle, film thickness and CLC refractive indices. Here, polarization Crosstalk is used to describe the ability o
Publikováno v:
Applied Physics Letters. 79:9-11
We report a holographic polymer-dispersed liquid crystal cell whose reflection peak can be tuned as a function of applied voltage. Electro-optic results are presented which are in excellent agreement with our model based on coupled wave theory.
Publikováno v:
Applied Physics Letters. 76:523-525
We report single-layer holographic polymer-dispersed liquid-crystal materials with multiple reflection and/or diffraction gratings. Three switchable gratings are observed in a single film formed in a three-beam interference pattern. Two reflection gr