[10p-A11-1~12] 4.3 Laser sources and Laser applications

5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation AwardEnglish Presentation

[10p-A11-9] Development of a supercontinuum-based Dual-Comb Spectroscopy system with a Dual Comb Fiber laser

〇Karine Egiazaryan¹, Shotaro Kitajima¹, Norihiko Nishizawa¹ (1.Nagoya Univ.)

Keywords:

frequency comb,Dual-Comb spectroscopy,Fiber laser

Dual-Comb Spectroscopy (DCS) enables rapid, high-resolution spectral acquisition using two optical frequency combs with a slight difference in repetition rates. In this work, we introduce a Supercontinuum (SC)-based DCS system driven by a dual-comb fiber laser mode-locked with a carbon nanotube saturable absorber. The SC spans over 600 nm, providing a broad spectral window for gas sensing. Due to low power density, a narrower-bandwidth diagnostic measurement was conducted, with clear absorption lines for methane observed. The broadband spectroscopy and implementation of coherent averaging (to recover contrast from timing jitter) are upcoming projects.