Optical data storage in LC cells

• Autorzy: Sutkowski, M. , Grudniewski, T. , Zmijan, R. , Parka, J. , Nowinowski-Kruszelnicki, E.
• Konferencja: International Workshop on Liquid Crystals for Photonic ; (26-28.04.2006 ; Gent, Belgium)
• Języki publikacji: EN

Abstrakty

EN

Liquid crystal devices as a medium for holograms storage have been investigated. Long term memory effects in LC cells have been observed. Experiments proved that certain combination of insulating alignment layers has a major influence on the long term memory effect. Optimal liquid crystal cell construction allows us to achieve sufficient diffraction efficiency to record holographic patterns and to develop a re-writable holographic medium. The configuration of PVK and polyimide layers in LC cell construction with specific LC mixture was tested. The method of permanent and re-writable recording of optical data (holographic pattern) onto LC cells was achieved. However, the method of erasing recorded data was realized but mechanisms of this phenomenon are not clearly understood yet.

Słowa kluczowe

EN

photorefractive liquid crystals; holography; optical data storage

• Czasopismo: Opto-Electronics Review
• Rocznik: 2006
• Tom: Vol. 14, No. 4
• Strony: 335-337
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Sutkowski, M.

autor

Grudniewski, T.

autor

Zmijan, R.

autor

Parka, J.

autor

Nowinowski-Kruszelnicki, E.

• Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 15/19 Nowowiejska Str., 00-865 Warsaw, Poland,

Bibliografia

• 1. J. Parka, M. Sutkowski, and T. Grudniewski, "Liquid crystal photosensitive cells as a medium for real-time digital projected holograms", Molecular Crystals and Liquid Crystals 10, 11-15 (2002).
• 2. J. Parka, T. Grudniewski, E. Nowinowski, and Y. Kurioz, "Photorefractive effects in nematic liquid crystal cells with different orientation layers", Opto-Electron. Rev. 10, 11-15 (2002).
• 3. A.F. Naumov and G.D. Love, "Perspectives of liquid crystals for adaptive optics applications", Proc. SPIE 4124, 57-62 (2000).
• 4. K. Komorowska, A. Miniewicz, and J. Parka, "Holographic grating recording in large area photoconducting liquid crystal panels", Synthetic Metals 109, 189-193 (2000).
• 5. T. Grudniewski, M. Sutkowski, J. Parka, and A. Miniewicz, "The digital holograms projected onto LC cells", Biuletyn WAT 51, (2002). (in Polish).
• 6. T. Grudniewski, J. Parka, R. Dąbrowski, A. Januszko, and A. Miniewicz, "Investigations of the diffraction efficiency in dye-doped LC cells under low frequency AC voltage", Opto-Electron. Rev. 10, 11-15 (2002).
• 7. J. Parka, "Investigation of physical and electrooptical properties of liquid crystal guest-host nematic mixtures system for dynamic holography", Proc. SPIE 4101, 97-101 (2000).