The transient behavior of the photovoltaic effect detected in the same kind of cell using c.w. and pulsed light excitation was examined. The study was performed on sandwich-like cells consisting of two parallel plane indium tin oxide-coated glass substrates, filled with mixture of the nematic 5CB liquid crystal and a small amount of methyl red. Results demonstrated a change of polarity of the photoinduced electromotive force while reaching the steady-state value under c.w. irradiation; and the generation of a transient photovoltage induced by a single 4 ns laser pulse with moderate energy density.
Enhancement of the optical nonlinearity in liquid crystals throughout the photovoltaic effect / Francescangeli, Oriano; Lucchetti, Liana; Simoni, Francesco; S., Slussarenko. - (2000), p. 144. [10.1109/IQEC.2000.908014]
Enhancement of the optical nonlinearity in liquid crystals throughout the photovoltaic effect
FRANCESCANGELI, ORIANO;LUCCHETTI, Liana;SIMONI, Francesco;
2000-01-01
Abstract
The transient behavior of the photovoltaic effect detected in the same kind of cell using c.w. and pulsed light excitation was examined. The study was performed on sandwich-like cells consisting of two parallel plane indium tin oxide-coated glass substrates, filled with mixture of the nematic 5CB liquid crystal and a small amount of methyl red. Results demonstrated a change of polarity of the photoinduced electromotive force while reaching the steady-state value under c.w. irradiation; and the generation of a transient photovoltage induced by a single 4 ns laser pulse with moderate energy density.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
