Time-domain spectroscopy of methane excited by resonant high-energy mid-IR pulses. (12th July 2021)

• Record Type: Journal Article
• Authors: Crippa, G; Faccialà, D; Prasannan Geetha, P; Pusala, A; Musheghyan, M; Assion, A; Bonanomi, M; Cinquanta, E; Ciriolo, A G; Devetta, M; Fazzi, D; Gatto, L; De Silvestri, S; Vozzi, C; Stagira, S
• Is Part Of: JPhys photonics. Volume 3:Number 3(2021)
• Publication Date: 2021-07-12
• Subjects: four-wave mixing -- rotovibrational molecular spectroscopy -- ultrafast spectroscopy; Photonics -- Periodicals; 621.365
• DOI: 10.1088/2515-7647/ac0d0e
• Languages: English
• ISSNs: 2515-7647

Abstract

Abstract: We describe the implementation of nonlinear time-domain spectroscopy of rotovibrational IR-active modes in methane through broadband Four-Wave Mixing driven by resonant high-energy mid infrared laser pulses. At high driving pulse intensities we observe an efficient vibrational ladder climbing triggered in the molecules. This study opens the possibility to impulsively and selectively excite molecules of biological interest to high-lying vibrational states and to characterize their dynamics.