Polarization exchange of optical eigenmode pair in twisted-nematic Fabry-Perot resonator

Gunyakov, Vladimir A.; Timofeev, Ivan V.; Krakhalev, Mikhail N.; Zyryanov, Victor Ya. PHYSICAL REVIEW E, 96 (2): Doi: 10.1103/PhysRevE.96.022711 AUG 29 2017

The polarization exchange effect in a twisted-nematic Fabry-Pérot resonator is experimentally confirmed in the regimes of both uniform and electric-field-deformed twisted structures. The polarization of output light in the transmission peaks is shown to be linear rather than elliptical. The polarization deflection from the nematic director grows from 0 to 90 angle and exchanges the longitudinal and transverse directions. Untwisting of a nematic by a voltage leads to the rotation of the polarization plane of light passing through the resonator. The polarization exchange effect allows using the investigated resonator as a spectral-selective linear polarizer with the voltage-controlled rotation of the polarization plane.