[14p-B406-1~18] 3.10 Optical quantum physics and technologies

[14p-B406-10] Mid-infrared light generation by parametric down-conversion with PPSLT

〇Koichiro Tanaka¹, Masayuki Hojo¹ (1.Dept. od Physics, Kyoto Universirty)

Keywords:Parametric down conversion, mid-infrared light generation, PPSLT

Parametric down-conversion process is a well-known process of generating photon pairs in the mid-infrared region and the visible region that are quantumly correlated. In this study, we investigated the parametric down-conversion process using a periodically-polarized Mg-doped LiTaO₃ (PPSLT) crystal. When the wavelength of the pump light was selected from 0.6 µm to 0.85 µm, we found that there were two coaxial solutions existing with the same polarization-periodicity of the PPSLT crystal. The broadband mid-infrared light generation utilizing this feature will be described.