Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Hemasiri Vithana"'
Publikováno v:
Optics Communications. 147:265-268
We report on optical circular dichroism of chiral multilayer SiOx films obtained by a novel vacuum deposition technique. The film layers were deposited at an oblique incidence angle to render them optically anisotropic, and were stacked such that the
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. 301:289-294
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
Autor:
David Linton Johnson, J. A. Mann, Jianmin Chen, Hemasiri Vithana, Masa Aki Kakimoto, Jerome B. Lando, A. Albarici
Publikováno v:
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals. 275:49-61
Multilayer polyimide (PI) films were successfully fabricated using the Langmuir-Blodgett (LB) technique. These films were studied in several ways relevant to their use as liquid crystal alignment layers. (1) The influence of dipping speed and creep t
Publikováno v:
Physical Review E. 51:454-461
Publikováno v:
Applied Physics Letters. 67:2588-2590
A structure for an electro‐optically controlled liquid crystal diffraction grating is proposed, which can dramatically simplify the fabrication process of liquid crystal optical gratings. The structure consists of two alternating stripes. Each stri