[20a-A402-1~11] 3.9 Terahertz technologies

[20a-A402-11] Generating Intense Terahertz Pulses with Longitudinal Electric fields

〇Mizuho Matoba¹, Natsuki Nemoto¹, Natsuki Kanda^2,3, Kuniaki Konishi¹, Junji Yumoto¹, Makoto Kuwata-Gonokami¹ (1.School of Sci., The Univ. of Tokyo, 2.RIKEN, 3.PSC, The Univ. of Tokyo)

Keywords:terahertz, cylindrical vector beam, longitudinal electric field

Two-dimensional materials, such as graphene, are predicted to have a strong response to vertically induced electric and magnetic fields. The longitudinal fields generated at the focus of cylindrical vector beams and first-order Hermite-Gauss (HG) beams may allow for such material control on ultrafast time scales. Here, we demonstrate a method to convert broadband linear-polarized THz beams to HG beams, and succeed in creating strong longitudinal fields.