[10p-N107-1~12] 3.6 Ultrashort-pulse and high-intensity lasers

[10p-N107-7] Spatiotemporal symmetry description for angle dependence of high-order harmonic generation under linearly polarized electric field

〇Yasushi Shinohara¹, Kotaro Imasaka², Satoshi Ashihara², Kenichi L. Ishikawa¹ (1.School of Engineering, The Univ. of Tokyo, 2.IIS, The Univ. of Tokyo)

Keywords:solid-state high-order harmonic generation, spatiotemporal symmetry

The solid-state high-order harmonic generation (HHG) requires additional concepsts, such as intraband current and Berry curvurature, to the gas phase counterpart for generation mechanisms. We have developed a robust theory to explain angle-dependence of solid-state HHG under linearly polarized electric field only relying on spatiotemporal symmetry in the target material and the applied field.