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 SM ISO690:2012BERIL, Stephan, GLADILIN, Vladimir, MELNIK, Alexey, MUZICHENKO, Alla, FOKOTILOV, Evgeniy, SOTNIKOV, Gennadiy. The main parameters of light spatial modulators using single crystal cdte and gaas(Cr) as photoreceptors. In: Proceedings of SPIE - The International Society for Optical Engineering, Ed. 1, 21 ianuarie 1994, Moscow. Bellingham, Washington: SPIE, 1994, Vol.2051, pp. 800-804. ISSN 0277-786X. DOI: https://doi.org/10.1117/12.165974 |
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 Proceedings of SPIE - The International Society for Optical Engineering Vol.2051, 1994 |
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Conferința "Optical Information Processing" 1, Moscow, Rusia, 21 ianuarie 1994 | ||||||
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| DOI:https://doi.org/10.1117/12.165974 | ||||||
| Pag. 800-804 | ||||||
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The sens i tometri c. rezo1vometric and dynamic characteristics of the spatial light modulators (LSM) with MDS-liquid crystal structure were investigated in theg wavelength range from 0.4 to 1.5 μm at applied voltage frequencies f = 103to 105Hz. The CdTe and GaAs(Cr) single crystal plates with thicknesses f = 10 to 500μm served as photoreceptors. The writing light modulation (with contrasts up to 100:1) was realized due to hybrid-effect in the nematic LC layers with the thicknesses 5 to 20 μm. The writing light intensities providing output contrast 2:1 at f about 2kHz were from 3 to 10 μW/cm2far CdTe and 0.5 to 2 μW/cm2for GaAs(Cr) in the sensitivity maximum, and if the times of electrooptic response switching on and switching. off were about 15 ms it corresponded to the energy sensitivity of (1-5) 107J-1cm. When f increases the sensitivity falls down as f-α(a is about 1.2-1.6). The resolution raises when f increases as well as l decreases. |
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| Cuvinte-cheie Engineering controlled terms Cadmium telluride, gallium arsenide, Liquid crystals, Optical data processing, Semiconducting gallium, single crystals, Vision Engineering uncontrolled terms Applied voltages, dynamic characteristics, Electro-optic response, Main parameters, Nematic LC, Single-crystal plates, Spatial modulators, Wavelength ranges Engineering main heading Light modulators |
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