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POLICRYPS structures as switchable optical phase modulators.

L De Sio1, N Tabiryan, R Caputo

  • 1LICRYL (Liquid Crystals Laboratory), National Institute for the Physics of Matter (INFM-CNR), Center of Excellence CEMIF.CAL, Department of Physics, University of Calabria, Italy. desio@fis.unical.it

Optics Express
|June 12, 2008
PubMed
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We developed polymer-liquid crystal composite structures (POLICRYPS) that act as electrically controlled optical phase modulators. These structures function as switchable phase retarders, ideal for high-power laser applications due to stable performance.

Area of Science:

  • Materials Science
  • Optoelectronics
  • Polymer Science

Background:

  • Light sculptured periodic structures offer unique optical properties.
  • Liquid crystals (LCs) are widely used in optical devices due to their tunable birefringence.
  • Combining polymers and LCs can lead to advanced electro-optic materials.

Purpose of the Study:

  • To investigate the optical phase modulator behavior of polymer-LC composite structures (POLICRYPS).
  • To evaluate the performance of POLICRYPS as electrically tunable retardation plates.
  • To assess the suitability of POLICRYPS for high-power laser applications.

Main Methods:

  • Fabrication of POLICRYPS using alternating polymer slices and aligned liquid crystal films.
  • Characterization of optical phase modulation using polarized light.

Related Experiment Videos

  • Analysis of birefringence dependence on applied voltage and incident light power.
  • Application of Jones matrices formalism for theoretical validation.

    • Main Results:

    • POLICRYPS exhibit electrically controlled optical phase modulation.
    • The structures function as retardation plates, with birefringence tunable via applied voltage.
    • Birefringence remains stable even with increased incident laser power.
    • Experimental results align well with Jones matrices formalism predictions.

    Conclusions:

    • POLICRYPS demonstrate effective electrically tunable birefringence.
    • Their stability under high optical power makes them suitable for switchable phase retarders.
    • These composite structures represent a promising material for advanced optical modulation applications.