[15p-K308-1~9] 3.5 Ultrashort-pulse and high-intensity lasers

3:35 PM - 3:50 PM JST(6:35 AM - 6:50 AM UTC)

[15p-K308-9] THz Spectroscopy using Mechanically Shared Dual-Comb Fiber laser

〇Takumi Takahoshi¹, Ryusei Uchiyama¹, Naoki Takeshi¹, Toshiyuki Miyazaki¹, Kousuke Kubota¹, Takeshi Yasui², Shinichi Matsubara³, Yoshiaki Nakajima¹ (1.Toho Univ., 2.pLED, 3.JASRI)

Keywords:

optical frequency comb,THz time domain spectroscopy

We have developed a system of asynchronous sampling based on dual comb spectroscopy (ASOPS-THz-TDS) using an All-PM dual-comb fiber laser with mechanical sharing with high relative stability to generate and detect THz waves. The time waveform of the THz wave transmitted through the Si plate was obtained by this system, and the amplitude and phase spectra were obtained by using FFT on it to derive the transmission and phase difference spectra.