[20p-B203-1~10] 3.8 Terahertz technologies (formerly 3.9)

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[20p-B203-10] Gapless detection of a broadband terahertz pulse using a metal surface in air based on field-induced second-harmonic generation

〇Shunsuke Tanaka¹, Yuta Murotani¹, Shunsuke Sato^2,3, Tomohiro Fujimoto¹, Takuya Matsuda¹, Natsuki Kanda¹, Ryusuke Matsunaga¹, Jun Yoshinobu¹ (1.The Institute for Solid State Physics, The Univ. of Tokyo, 2.University of Tsukuba, 3.Max Planck Institute)

Keywords:

gapless detection of a broadband THz pulse

We developed a THz waveform detection method by simply using a polished metal surface in air, and named the present new method air-metal coherent detection (AMCD), which is based on the interference between the THz field-induced second harmonic (TFISH) light from air molecules and the second harmonic generation (SHG) light from the metal surface. Compared to conventional methods for evaluating the THz waveform such as the air-biased coherent detection (ABCD) method and electro-optic (EO) sampling method, AMCD can easily realize the gapless detection of a broadband THz pulse.