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

We invite you to read this article Electro-optical control of polarization in femtosecond-laser written waveguides using an embedded liquid crystal cell

This scientific publication introduces a NOVEL APPROACH to embedding adjustable waveplates into FLDW optical circuits. It achieves this by incorporating a layer of liquid crystal into the waveguide. Control over the liquid crystal’s orientation via applied voltage induces bias-dependent phase retardation, effectively acting as a voltage-dependent waveplate.

Sketch of the inscription setup (/2 – half-wave plate, Pol.- polarizer, SHG – non-linear crystal for second harmonic generation).@Kim Lammers, Alessandro Alberucci, Chandroth P. Jisha, Alexander Szameit, and Stefan Nolte, “Electro-optical control of polarization in femtosecond-laser written waveguides using an embedded liquid crystal cell,” Opt. Mater. Express 14, 836-846 (2024)