[19a-B203-1~9] 3.8 Terahertz technologies (formerly 3.9)

11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)

[19a-B203-8] Terahertz doppler-free spectroscopy in rotational levels of gas-phase molecules

〇Kohei Eguchi¹, Takashi Arikawa^2,3, Koichiro Tahaka^1,4 (1.Dept. of Phys., Kyoto Univ., 2.University of Hyogo, 3.JST PRESTO, 4.iCeMS, Kyoto Univ.)

Keywords:

terahertz,high-resolution high-accuracy spectroscopy

Although rotational transition of gas-phase molecules is observed in the terahertz region, high-resolution high-accuracy spectroscopy has rarely been performed, and the details have not been clarified yet. In this study, we have performed terahertz Doppler-free spectroscopy in rotational levels of gas-phase molecules and observed Lamb dip. In this talk, power and pressure dependence of the homogeneous width estimated from the Lamb dip will be discussed.