Dynamic photorefractivity guided by single-pulse voltage

Autor:	Anatoliy A. Kovalev, Janusz Parka, A. V. Agashkov
Rok vydání:	2008
Předmět:	Diffraction Materials science business.industry Physics::Optics General Chemistry Condensed Matter Physics Diffraction efficiency Pulse (physics) Optics Liquid crystal Electric field General Materials Science Electric potential business Pulse-width modulation Voltage
Zdroj:	Crystallography Reports. 53:302-307
ISSN:	1562-689X 1063-7745
DOI:	10.1134/s106377450802020x
Popis:	The dynamic photorefractivity in a cell with photoconducting orienting layers, filled with a nematic liquid crystal (LC) 6CHBT and a mixture of anthraquinone dyes AD1 and AD2, has been investigated. The single-pulse mode, in which the polarity and amplitude of a dc electric field applied to an LC cell are switched for a fixed time interval, has been used. The scheme of dynamic self-diffraction of low-power laser beams was used in the experiment. The dependences of the width and intensity of diffraction pulses on the bias and switching voltages have been investigated. It is established that the width and intensity of the diffraction pulse arising after initial voltage recovery depends also on the switching pulse width. At the optimal width of the control pulse, the diffraction efficiency increases by two orders of magnitude.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::125c0108b5e1c7b0a939e389222d0463 https://doi.org/10.1134/s106377450802020x Zobrazit plný text záznamu Plný text ve formátu PDF