Second-order nonlinear optical susceptibilities of AIIBVI and AIIIBV semiconductors

The second-order nonlinear optical (NLO) susceptibilities χ123(2) of AIIBVI and AIIIBV groups of semiconductors with zincblende (ZB) structure have been studied. Two relations have been proposed for the calculation of χ123(2)(0) at zero frequency. One is based on bond charge model of Levine and the other is based on plasma oscillations theory of solids. Calculated values of χ123(2)(0) for all compounds are in fair agreement with the available experimental and reported values.