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Dynamical behaviour of holographic gratings with a nematic film --Polymer slice sequence structure

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Abstract.

We have studied the dynamical response of a new kind of holographic grating to a pulsed electric field. The structure, named POLICRYPS, consists of a sequence of homogeneous polymer slices separated by liquid-crystal films. We have found that both the rise and fall response times depend on the pulse duration and amplitude of the applied electric field. We propose a phenomenological explanation for this behaviour, outlining the possibility of getting response times of the order of 100 \(\mu \)s by properly choosing the pulse shape. Results are very interesting for developments in which POLICRYPS gratings could be proposed as basic elements in photonic devices for telecom applications, and induce to a deeper analysis of the microscopic interaction between liquid crystal and polymer interfaces in these samples.

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Authors and Affiliations

  1. INFM Unitá di Napoli and Dipartimento di Scienze Fisiche, Universitá di Napoli Federico II, Via Cinthia, 80126, M. S. Angelo, Napoli, Italy

    A. Marino, F. Vita, V. Tkachenko & G. Abbate

  2. Liquid Crystal Laboratory LICRYL, INFM Unitá di Cosenza CEMIF-CAL, Centro di Eccellenza and Dipartimento di Fisica, Universitá della Calabria, 87036, Arcavacata di Rende (CS), Italy

    R. Caputo, C. Umeton & A. Veltri

Authors
  1. A. Marino
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  2. F. Vita
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  3. V. Tkachenko
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  4. R. Caputo
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  5. C. Umeton
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  6. A. Veltri
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  7. G. Abbate
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Corresponding author

Correspondence to F. Vita.

Additional information

Received: 5 February 2004, Published online: 14 September 2004

PACS:

61.30.Pq Microconfined liquid crystals: droplets, cylinders, randomly confined liquid crystals, polymer dispersed liquid crystals, and porous systems - 42.40.Eq Holographic optical elements; holographic gratings - 61.30.Hn Surface phenomena: alignment, anchoring, anchoring transitions, surface-induced layering, surface-induced ordering, wetting, prewetting transitions, and wetting transitions

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Marino, A., Vita, F., Tkachenko, V. et al. Dynamical behaviour of holographic gratings with a nematic film --Polymer slice sequence structure. Eur. Phys. J. E 15, 47–52 (2004). https://doi.org/10.1140/epje/i2004-10035-y

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  • DOI: https://doi.org/10.1140/epje/i2004-10035-y

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