Electric Field Effect on Opticai Non Linear Absorption in Semiconductor
CdS半导体非线性吸收中的电场作用

An optical nonlinear absorption has been observed in CdS under'an external OC elect-ric field at Room temperature. Nonlinear absorption increases with the increase of the appliedvoltage.The incident light intensity needed for the appearance of nonlinear absorption decre-ases when the applied voltage increases. Theoretical estimation from the view point of ex-citon-electron scattering is in agreement with the experimental results qualitatively.