Optical Semiconductor Device

摘要

The present invention provides an optical semiconductor device including a semiconductor thin film ( 4 ) having photoconductivity and a pair of electrodes ( 5 ) and ( 10 ) for applying an electric field to an inside of the semiconductor thin film ( 4 ) in a direction approximately vertical to a surface of the semiconductor thin film ( 4 ), wherein the semiconductor thin film ( 4 ) generates an electromagnetic wave when light is applied to a region thereof to which the electric field is applied. The electrodes are provided to a front surface and a back surface of the semiconductor thin film ( 4 ) with the semiconductor thin film interposed therebetween.