New fast-relaxed liquid crystal materials for optical communication networks
Vernadsky National Library of Ukraine
Переглянути архів Інформація| Поле | Співвідношення | |
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New fast-relaxed liquid crystal materials for optical communication networks
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| Creator |
Garbovskiy, Yu.
Sadovenko, A. Koval'chuk, A. Klimusheva, G. Bugaychuk, S. |
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| Description |
Recording the dynamic holograms with microsecond relaxation times under action of laser pulses was obtained in composites based on the novel class of liquid crystals (LC), namely in ionic metal-alkanoates. Holographic parameters of the recording and relaxation characteristics were studied for doped lyotropic ionic LC and sandwich-like cells with photo-sensitive impurities for purposes of real-time dynamic holography applications. The thin cells demonstrate high-velocity dynamic grating recording under laser pulses both of nanosecond and picosecond durations at the visible wavelengths. The cells exhibit a fast temperature relaxation time (with the time constant 30 μs for the store heat density more than 50 kJ/s). Ionic lyotropic smectic LCs possess a high intrinsic anisotropic conductivity as compared with other LCs – dielectrics. To explain the relaxation mechanisms in ionic smectic LC matrix, the temperature dependences of the electro-conductivity have been investigated. The charge currier mobility and activation energy in cells were estimated. The mechanism of high-velocity resonance nonlinearity due to the saturation of excited states in photosensitive centers and mechanisms of the grating erasure connected with charge transport in the ionic LC matrix were discussed.
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| Date |
2017-06-14T17:32:06Z
2017-06-14T17:32:06Z 2006 |
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| Type |
Article
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| Identifier |
New fast-relaxed liquid crystal materials for optical communication networks / Yu. Garbovskiy, A. Sadovenko, A. Koval'chuk, G. Klimusheva, S. Bugaychuk // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2006. — Т. 9, № 1. — С. 63-67. — Бібліогр.: 10 назв. — англ.
1560-8034 PACS 42.70.Df http://dspace.nbuv.gov.ua/handle/123456789/121594 |
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| Language |
en
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| Relation |
Semiconductor Physics Quantum Electronics & Optoelectronics
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| Publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
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