A ug 2 00 6 N onlinear optics ofIII-V sem iconductors in the terahertz regim e : an ab-initio study

Eric Rom an, Jonathan R.Yates, M arek Veithen, David Vanderbilt, and Ivo Souza 1 Departm ent of Physics, University of California, Berkeley, CA 94720 2 M aterials Science Division,Lawrence Berkeley NationalLaboratory, Berkeley, CA 94720 3 D epartem ent de Physique, Universit e de Li ege, B-5, B-4000 Sart-Tilm an, Belgium 4 Departm ent ofPhysics and Astronom y,Rutgers University,Piscataway,New Jersey 08854-8019 (D ated:Septem ber20,2021)