Juan Jiménez is a Professor at the University of Valladolid, Spain, working in the field of microscopic characterization of semiconductors, using electron (Cathodoluminescence) and optical (photoluminescence, Raman scattering and photocurrent) beams. He has studied the local properties and uniformity of GaAs, SiC, InP and other semiconductors. He received his degree in Physics from the University of Valladolid in 1975 and his PhD from Valladolid in 1979. He undertook postdoctoral work at the University of Montpellier, France from 1978-1981 and received a PhD from Montpellier University in 1981.