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Your search keyword '"Boris Ya Zel'dovich"' showing total 3 results
Start Over Author "Boris Ya Zel'dovich" Journal frontiers in optics
3 results on '"Boris Ya Zel'dovich"'

1. Polarization-controlled switching in cycloidal nematic liquid crystals

Author

Leon B. Glebov, Hakob Sarkissian, Nelson V. Tabiryan, Svetlana V. Serak, Vasile Rotar, and Boris Ya Zel'dovich

Subjects
Diffraction, Thin layers, Materials science, genetic structures, business.industry, Grating, Diffraction efficiency, Polarization (waves), enzymes and coenzymes (carbohydrates), Optics, Liquid crystal, biological sciences, health occupations, bacteria, Optoelectronics, business, Diffraction grating, Circular polarization
Abstract

Cycloidal nematic liquid crystal cells are capable of high diffraction efficiency in thin layers of materials comparable to the radiation wavelength. We demonstrate switching between diffraction orders of such grating using phase retarder.

Published
2006
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2. Spectral Transmission of Volume Bragg Gratings: Influence of Uncompensated Fresnel Reflections

Author

Leon B. Glebov, Sergiy Mokhov, Boris Ya Zel'dovich, and Julien Limeau

Subjects
PHOSFOS, Optics, Materials science, Interference (communication), Volume (thermodynamics), Transmission (telecommunications), business.industry, Transmittance, Physics::Optics, Fresnel equations, business, Diffraction efficiency, Refractive index
Abstract

Spectral profile of reflective Volume Bragg Gratings is studied with account of interference effects of Fresnel boundaries, partially or completely uncoated. Small boundary contributions diminish considerably transmissivity in the region designated for 100% transmission.

Published
2006
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3. Implementation of 3D Angular Selective AchromaticDiffraction Optical Grating device

Author

Vadim Smirnov, Leon B. Glebov, Boris Ya Zel'dovich, and Nelson V. Tabirian

Subjects
Materials science, Holographic grating, business.industry, Physics::Optics, Acousto-optics, Electromagnetically induced grating, Grating, law.invention, Ultrasonic grating, Optics, Achromatic lens, law, Blazed grating, Optoelectronics, business, Diffraction grating
Abstract

Angular Selective Achromatic Diffraction Optical Grating (ASADOG) device has been implemented. Surface reflective grating had 1200 lines per mm. Two identical volume holograms were implemented using Photo-Thermo- Refractive (PTR) glass technology, with spatial frequency 1697 lines per mm. Sequential diffraction of incident light by surface grating by first volume grating and then by second one oriented at 90 degrees resulted in angular selection of incident beam, completely achromatic within the spectral range from red to blue including.

Published
2003
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