[22p-A602-1~17] 3.7 Optical measurement, instrumentation, and sensor (formerly 3.8)

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)

[22p-A602-14] Development of Femtosecond Coherent Raman Spectroscopy Using a Hollow-Core Anti-Resonant Fiber

〇(M2)Kensei Inayoshi¹, Shin-ichi Zaitsu^1,2, Noritada Kaji^1,2 (1.Grad. School of Eng. Kyushu Univ., 2.Ctr. For Fut. Chem. Kyushu Univ.)

Keywords:

Raman Spectroscopy,Gas Analysis,Ultra-Short Pulse LASER

While gas analysis methods based on Raman spectroscopy have rapid measurement speed and high chemical species discrimination, the low efficiency of Raman scattering light generation and the background are problematic. In this study, we develop a Raman spectroscopy using a hollow-core anti-resonant fiber to solve these problems. Using ultra-short pulse light as pump and seed light, we observe strong Raman light from coherently excited gas molecules. The final goal is to realize a highly sensitive ultra-trace gas analysis method based on this spectroscopy.