High-Sensitivity and High-Precision RI Sensing Using THz-Comb-Based Frequency Multiplication and Dual-Comb Active-Dummy Temperature CompensationMasayuki Higaki, Shuji Taue, Yu Tokizane, Eiji Hase, Takeo Minamikawa and Takeshi YasuiEPJ Web Conf., 335 (2025) 03021DOI: https://doi.org/10.1051/epjconf/202533503021