Electron-diffraction transistors

The design, fabrication, and applications of QUADFETs (quantum diffraction field effect transistors) are described. The QUADFETs will enable Fraunhofer diffraction to be demonstrated and exploited. These devices are high-electron-mobility transistors (HEMTs), in which the source and a specially formed drain perform the functions of the light source and viewing screen of an analogous optical system, respectively. Experimental results on QUADFETs are presented.<>