[20p-A402-1~14] 3.9 Terahertz technologies

▲ [20p-A402-6] Luminescence of ZnO single crystal under the tunable intense terahertz pulse excitation

〇(M2)Xingyu Sun¹, Masaya Nagai¹, Masaaki Ashida¹, Goro Isoyama² (1.Grad. Sch. of Eng. Sci., Osaka Univ., 2.ISIR, Osaka Univ.)

Keywords:extremely nonlinear optics, Zener tunneling

In the 78^th JSAP Autumn Meeting, we have reported the luminescence from sintered ZnO pellet under the irradiation of extracted micropulse from the THz-FEL pulse. However, tiny excitation frequency dependences of THz-induced luminescence from the sintered ZnO pellet indicates impact ionization via resident carriers in the sintered pellet with fast carrier scattering.
In this report, we measured THz-induced luminescence from a ZnO high-quality single crystal and investigated the excitation frequency dependence of the luminescence, characteristic for the field-sensitive phenomena.