Landa Hoke

TL;DR: It is demonstrated that they can be combined for polarization-insensitive imaging and optical switching applications and a pair of closely spaced, parallel oriented, cycloidal polarization gratings is capable of canceling the diffractive property of an individual grating.

TL;DR: This study compares optical switching capabilities of liquid crystal materials based on different classes of azobenzene dyes and demonstrates high photosensitivity to both a cw beam as well as nanosecond laser pulse with only 1 s relaxation of light-induced changes in material properties.

TL;DR: In this paper, the positions and intensities of the absorption bands in the electronic spectrum of benzene ring-based mono-azo dyes were modeled numerically, while preserving their potential mesogenic ability.

TL;DR: Tripathy et al. as discussed by the authors synthesized novel aromatic amine substituted acridine dyes as potential candidates for the photosensitizers in dye sensitized nanocrystalline semiconductor based solar cells (DSSC) cells.

TL;DR: Optical switching with single nanosecond laser pulses of 532 nm wavelength is reported using high-efficiency optical axis gratings made with a nematic liquid crystal doped with an azobenzene dye, exhibiting enhanced photosensitivity at green wavelengths and low threshold switching.