Patent ID: 6602558
Filing Date: 2003-08-05
Classification: G02F

Abstract:
A method for manufacturing a non-linear optical silica thin film comprising the steps of(a) vaporizing SiO2 and GeO2 to form a first SiO2â€”GeO2 thin film having dangling bonds on a substrate, and (b) irradiating the first SiO2â€”GeO2 thin film, while it is being formed, with charged particles to effect polarization orientation in the first SiO2â€”GeO2 thin film by orienting the dangling bonds toward a predetermined direction, wherein the first SiO2â€”GeO2 thin film being formed is alternately irradiated with positively charged particles and negatively charged particles to form at least a second layer of SiO2â€”GeO2 thin film having a different polarization orientation in a direction of the first SiO2â€”GeO2 thin film thickness.