Light controlled phase shifter for optofluidics

Light controlled phase shifter for optofluidics

We report the light-induced control of optical phase shift by a liquid crystal cell made with LiNbO3:Fe crystals as substrates. We show that a phase shift of a few πs can be easily reached for two orthogonal polarizations due to liquid crystal reorientation driven by the photovoltaic electric field...

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Veröffentlicht in:Optics letters 2016-01, Vol.41 (2), p.333-335
Hauptverfasser: Lucchetti, L, Kushnir, K, Zaltron, A, Simoni, F
Format: Artikel
Sprache:eng
Schlagworte:
Crystals
Liquid crystals
Phase shift
Phase shifters
Pumps
Solar cells
Substrates
Switching
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Zusammenfassung:We report the light-induced control of optical phase shift by a liquid crystal cell made with LiNbO3:Fe crystals as substrates. We show that a phase shift of a few πs can be easily reached for two orthogonal polarizations due to liquid crystal reorientation driven by the photovoltaic electric field originated in the substrates. This effect is exploited to get all-optical switching with a contrast of about 80%, by 2 s pump pulse.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.41.000333