Abstract

There is much interest in materials displaying a small saturation intensity for use in four-wave mixing and optical bistability. In this paper we report on one such material comprised of fluorescein dye molecules imbedded in a matrix of boric acid glass. This material shows a luminescence decay time of about 2 sec and hence an extremely small saturation intensity which we have measured to be about 10 mW/cm². We have found that four-wave mixing can easily be observed at intensities of 10 mW/cm².

© 1984 Optical Society of America