Institute of Physics, National Academy of Sciences, 252?650 Kiev, Ukraine, UA Institute of Automation and Electrometry of RAN, 630?090 Novosibirsk, Russia, RU Fachbereich Physik, Universit?t Osnabrück, Osnabrück, 49080 Germany, DE
Abstract:
The first observation of optical hexagons in a medium with dominating photovoltaic charge transport – in LiNbO3:Fe – is reported. The optimum conditions for hexagon observation are revealed and discussed. The dynamics of hexagon formation are also studied. Received: 9 February 2000 / Published online: 8 March 2000