All-optical phase shifter with photovoltaic liquid crystal cell

L. Lucchetti; K. Kushnir; F. Ciciulla; A. Zaltron; G. Bettella; G. Pozza; C. Sada; V. Reshetnyak; F. Simoni

doi:10.1117/12.2235580

23 September 2016 All-optical phase shifter with photovoltaic liquid crystal cell

L. Lucchetti, K. Kushnir, F. Ciciulla, A. Zaltron, G. Bettella, G. Pozza, C. Sada, V. Reshetnyak, F. Simoni

Proceedings Volume 9940, Liquid Crystals XX; 99400G (2016) https://doi.org/10.1117/12.2235580
Event: SPIE Organic Photonics + Electronics, 2016, San Diego, California, United States

Abstract

Liquid crystal cells with LiNbO₃:Fe crystals as substrates, are described. The photovoltaic field generated by the substrates is able to reorient the liquid crystal director thus giving rise to a phase shift on the light propagating through the cell, as in liquid crystal light valves. The process does not require the application of an external electric field, thus being potentially useful for applications requiring a high degree of compactness. A detailed characterization of several cells based on lithium niobate crystals with different iron concentration has been carried out. The correlation between the LiNbO₃:Fe characteristics and the liquid crystal reorientation is also discussed.

Conference Presentation

Citation Download Citation

L. Lucchetti, K. Kushnir, F. Ciciulla, A. Zaltron, G. Bettella, G. Pozza, C. Sada, V. Reshetnyak, and F. Simoni "All-optical phase shifter with photovoltaic liquid crystal cell", Proc. SPIE 9940, Liquid Crystals XX, 99400G (23 September 2016); https://doi.org/10.1117/12.2235580

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