[8a-C213-1~13] 3.8 Terahertz technologies

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8a-C213-3] Tracking THz Time Domain Spectroscopy using Time Programmable Frequency Comb

〇(D)Riku Shibata¹, Shinichi Watanabe¹ (1.Keio Univ.)

Keywords:

THz time domain spectroscopy,Optical frequency comb

We demonstrate tracking terahertz time-domain spectroscopy (THz-TDS) using two time-programmable optical frequency combs for THz generation and detection. The interpulse delay between the two combs can be arbitrarily controlled, allowing the measurement time window to follow changes in the sample position. By controlling the pulse-to-pulse timing, we efficiently acquired only a 60 ps time window around the THz waveform. We further demonstrated reflection-mode THz-TDS while continuously tracking a mirror moving at a constant velocity over a distance of 3 cm.