Terahertz optical elements for control of high-power laser irradiation V.S. Pavelyev, A.N. Agafonov, B.O. Volodkin, K.N. Tukmakov, B.A. Knyazev and Yu.Yu. Choporova EPJ Web Conf., 195 (2018) 07006 Published online: 23 November 2018 DOI: 10.1051/epjconf/201819507006