Polarization holographic data storage using azobenzene polyester as storage material

E. Lörincz, G. Szarvas, P. Koppa, F. Ujhelyi, G. Erdei, A. Süto, P. Várhegyi, Sz Sajti, Á Kerekes, T. Ujvári, P. S. Ramanujam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

7 Citations (Scopus)

Abstract

Aromatic side-chain azobenzene polyesters have been developed for polarization holographic application with proper thermal, room temperature and ambient light stability and good optical properties. Optical anisotropy and saturation behavior of the material due to polarized light irradiation are characterized by using numerical solution of the rate equations and by deduced approximate analytical expression. High density polarization holographic demonstrator systems have been developed using ∼2 μm thick azobenzene polyesters on reflective card form media. FFT computer simulation of the system including saturation model of the material allows optimization of system components including data density and capacity. A raw density as high as 2.77 bit/μm2 has been achieved without multiplexing in a compact, portable read/write system at 532 nm allowing more than 1000 readout without data loss. A separate read only system working at 635 nm realizes non-volatile readout and allows card exchange at a data density of 1.3 bit/μm2 Security level of the present holographic optical card systems can be further increased by using phase encoded reference beam. Advantageous applications of the proposed encrypted holographic card system are also outlined.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsJ.G. Grote, T. Kaino
Pages34-44
Number of pages11
Volume4991
DOIs
Publication statusPublished - 2003
EventPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Organic Photonic Materials and Devices V - San Jose, CA, United States
Duration: Jan 27 2003Jan 30 2003

Other

OtherPROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Organic Photonic Materials and Devices V
CountryUnited States
CitySan Jose, CA
Period1/27/031/30/03

Fingerprint

Azobenzene
polyesters
cards
data storage
Polyesters
Polarization
Optical anisotropy
Data storage equipment
polarization
Light polarization
Multiplexing
Fast Fourier transforms
readout
Optical properties
Irradiation
saturation
fast Fourier transformations
Computer simulation
multiplexing
polarized light

Keywords

  • Azobenzene polyester
  • Encryption
  • Holographic memory
  • Optical card
  • Polarization holography

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Lörincz, E., Szarvas, G., Koppa, P., Ujhelyi, F., Erdei, G., Süto, A., ... Ramanujam, P. S. (2003). Polarization holographic data storage using azobenzene polyester as storage material. In J. G. Grote, & T. Kaino (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4991, pp. 34-44) https://doi.org/10.1117/12.479454

Polarization holographic data storage using azobenzene polyester as storage material. / Lörincz, E.; Szarvas, G.; Koppa, P.; Ujhelyi, F.; Erdei, G.; Süto, A.; Várhegyi, P.; Sajti, Sz; Kerekes, Á; Ujvári, T.; Ramanujam, P. S.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / J.G. Grote; T. Kaino. Vol. 4991 2003. p. 34-44.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lörincz, E, Szarvas, G, Koppa, P, Ujhelyi, F, Erdei, G, Süto, A, Várhegyi, P, Sajti, S, Kerekes, Á, Ujvári, T & Ramanujam, PS 2003, Polarization holographic data storage using azobenzene polyester as storage material. in JG Grote & T Kaino (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4991, pp. 34-44, PROCEEDINGS OF SPIE SPIE - The International Society for Optical Engineering: Organic Photonic Materials and Devices V, San Jose, CA, United States, 1/27/03. https://doi.org/10.1117/12.479454
Lörincz E, Szarvas G, Koppa P, Ujhelyi F, Erdei G, Süto A et al. Polarization holographic data storage using azobenzene polyester as storage material. In Grote JG, Kaino T, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4991. 2003. p. 34-44 https://doi.org/10.1117/12.479454
Lörincz, E. ; Szarvas, G. ; Koppa, P. ; Ujhelyi, F. ; Erdei, G. ; Süto, A. ; Várhegyi, P. ; Sajti, Sz ; Kerekes, Á ; Ujvári, T. ; Ramanujam, P. S. / Polarization holographic data storage using azobenzene polyester as storage material. Proceedings of SPIE - The International Society for Optical Engineering. editor / J.G. Grote ; T. Kaino. Vol. 4991 2003. pp. 34-44
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