[15a-K304-1~11] 3.7 Optical measurement, instrumentation, and sensor

9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[15a-K304-3] Acquisition of absorption line by automatic interpolation in dual EO comb spectroscopy utilizing an SSB modulator

〇(M1)Sayaka Shishido¹, Sho Nosaka¹, Atsushi Ishizawa², Tadashi Nishikawa¹ (1.Tokyo Denki Univ., 2.Nihon Univ.)

Keywords:

optical frequency comb,dual-comb spectroscopy

In recent years, dual electro-optic (EO) comb spectroscopy has attracted attention as a simple and robust new spectroscopic analysis technique, with potential applications in areas such as breath analysis. To achieve high-performance analysis, it is necessary to ensure the wavelength bandwidth of the optical frequency comb while interpolating the comb line spacing. In this study, we developed an automatic interpolation system that scans by shifting the entire frequency of the optical frequency comb using an SSB modulator as a frequency shifter and successfully obtained the absorption spectrum of hydrogen cyanide.