[8p-A31-1~12] 3.4 Laser system and materials

4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[8p-A31-11] Pre-Pulse Suppression of Time-Asymmetric Pulses Using a Resonant Saturable Absorber Mirror for High-Sensitivity CARS

〇(DC)Hibiki Tsunekawa^1,2, Tsuneto Kanai¹, Atsunori Sakurai^1,2, Toshiki Sugimoto^1,2 (1.IMS, 2.SOKENDAI)

Keywords:

saturable absorber,pre-pulse supression,coherent anti-Stokes Raman sprctroscopy

Coherent anti-Stokes Raman spectroscopy (CARS) is a highly sensitive molecular analysis technique; however, non-resonant background can hinder molecular detection. In this study, pre-pulses contained in a time-asymmetric probe pulse, which often pose a problem in time-delayed CARS, were suppressed using a resonant saturable absorber mirror (RSAM). The pre-pulse suppression was observed by cross-correlation measurements, demonstrating that this approach is effective for efficient suppression of the non-resonant background and for extending CARS to systems with weaker signals.