Optical patterning of multidomain liquid-crystal displays with wide viewing angles

Article Abstract:

A linear photoalignment strategy controls the tilt angle between the long molecular axes and the substrates to provide improved fields of view in liquid-crystal displays. Functionalized substrates exposed to polarized light provide high-resolution patterns in the display plane. A proper control of the angle removes the orientation defects in the alignment pattern imposed on the crystal. The method enables fabrication of stable, multi-domain pixel displays.

Usage, Observations, Liquid crystal displays, Domain structure, Optical tooling

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Phase matching using an isotropic nonlinear optical material

Article Abstract:

It has been possible to demonstrate phase matching of a difference frequency generation process in a waveguide containing four Alox layers. Perfect phase matching was achieved with a cubic nonlinear material. GaAs is also the material of preference for quantum-well lasers, and research is being undertaken into the possibility of integrating quantum wells in the core of the nonlinear waveguide.

Phase modulation

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Optical polymer thin films with isotropic and anisotropic nano-corrugated surface topologies

Article Abstract:

Research is presented concerning the development of optical polymer thin films for use as antireflective coatings on optical components made of silicon, plastic and glass. Their nano- and micro-corrugated topologies are discussed.

Polymers, Letter to the Editor, Thin films, Optical properties, Reflectance

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