Free-electron laser as a tool for pump-probe measurements of the vibrational relaxation in condensed phases

• Published in: Optics communications Vol. 118; no. 3; pp. 255 - 260
• Main Authors: Broquier, M., Dubost, H., Kolos, R., Lefevre, J., Tramer, A., Berset, J.M., Ortega, J.M., Peremans, A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 15-07-1995; Elsevier Science; Elsevier
• Subjects: Atomic and molecular physics; Chemical Sciences; Exact sciences and technology; Infrared spectra; Molecular properties and interactions with photons; Molecular spectra; or physical chemistry; Physics; Theoretical and; Chemical solution; Inorganic compounds; Carbon dioxide; Vibrational relaxation; Infrared spectra; Experimental study; Matrix isolation; Pump probe spectrometry; Acetonitrile; Carbon monoxide; Absorption spectra; Vibrational mode; Organic compounds
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/0030-4018(95)00219-X

In this communication, we discuss the interest of the infrared free-electron laser (CLIO) for measurements of vibrational relaxation rates at the picosecond scale by a one-color pump-probe experiment. We report the results of preliminary experiments involving small molecules (CO, CO
2) in low-temperature argon matrices and intermediate-size molecules (acetonitrile, benzonitrile) in room-temperature CCl
4 solutions.