Details

Autor(en) / Beteiligte

• Lammers, Kim
• Alberucci, Alessandro
• Jisha, Chandroth P.
• Szameit, Alexander
• Nolte, Stefan

Titel

Electro-optical control of polarization in femtosecond-laser written waveguides using an embedded liquid crystal cell

Ist Teil von

• Optical materials express, 2024-04, Vol.14 (4), p.836

Ort / Verlag

Washington: Optical Society of America

Erscheinungsjahr

2024

Quelle

EZB Electronic Journals Library

Beschreibungen/Notizen

• By incorporating a liquid crystal layer into waveguides created through direct laser writing, a tunable waveplate in a fused silica waveguide is successfully realized. In the experiment, a voltage is applied to the birefringent liquid crystal layer, inducing changes in the internal molecular arrangement of the nematic liquid crystal (NLC). Owing to the voltage-induced rotation of the NLC molecules, the polarization of the transmitted light becomes dependent on the applied external electric field. This novel approach to polarization manipulation paves the way for a new family of reconfigurable devices and complex photonic circuits based upon femtosecond-written waveguides.