Work

Spatial modulation of light in photosensitive high-resolution metal–insulator–semiconductor structures with liquid crystals

Year: 1980

Type: article

Abstract: An investigation was made of spatial light modulators utilizing the electrooptic effects in a liquid-crystal layer, acting as the insulator in a photosensitive metal–insulator–semiconductor structure. The semiconductor was a crystal of bismuth silicate or germanate. A high value of the energy sensitivity, up to 2 cm 2 μ J (for total modulation of light), was obtained; the intensity of the control (switching) light in the blue part of the spectrum was 25–30 μ W /cm 2 . The resolution was up to 200 lines/mm (deduced from the fall to half the maximum value of the frequency-contrast characteristic). The liquid crystals employed made it possible to reach a frame repetition frequency of 30–50 sec −1 at room temperature. A two-frequency supply of the modulator structure made it possible to achieve a controlled memory regime with a data storage time up to 2 sec, and with recording and erasure times of ~1 msec.

Source: Soviet Journal of Quantum Electronics

DOI: 10.1070/qe1980v010n02abeh009920

Authors: A V Parfenov, I N Kompanets, Yurii M Popov

Institutions: P.N. Lebedev Physical Institute of the Russian Academy of Sciences, Academy of Sciences of the Soviet Union

Language: English

Topic: Photorefractive and Nonlinear Optics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

OpenAlex ID: W2009656769

FWCI: 1.233

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Cited by: 8

Related to: 10