Abstract

The demand for high-speed, highly effective information transmission and processing increases with the daily increase in the amount of information that society deals with. It is thought that development of a new optical device is needed to satisfy this demand, as the technical need for a high-speed element that can process more information also rises. The organic nonlinear optical crystal DAST (4- dimethyl amino-N-methyl-4 stilbazolium tosylate) [1] has extremely large nonlinearities (such as the electro-optical and second-order nonlinear optical coefficients [2]). The reproducibility of DAST crystal growth by the solution method is influenced by small deviations of the concentration of the DAST methanol solution. In this study, we developed a reproducible crystal growth method that directly monitors the concentration of DAST methanol solution by measuring the conductivity of the solution.

© 2001 IEEE