Quantification of distortion of the water OH-band using picosecond Raman spectroscopy. (1st February 2018)

• Record Type: Journal Article
• Authors: Pershin, S M; Grishin, M Ya; Lednev, V N; Garnov, S V; Bukin, V V; Chizhov, P A; Khodasevich, I A; Oshurko, V B
• Is Part Of: Laser physics letters. Volume 15:Number 3(2018:Mar.)
• Publication Date: 2018-02-01
• Subjects: Raman scattering -- picosecond and nanosecond pulses -- Raman OH stretching band -- non-equilibrium hydrogen bond structures dynamics in water; Lasers -- Periodicals; Physics -- Periodicals; 621.366
• DOI: 10.1088/1612-202X/aa9321
• Languages: English
• ISSNs: 1612-2011

Abstract

Abstract: An anomalously large (~40 cm −1 ) blue-shift of the Raman OH stretching vibration band was observed when bulk water was probed by picosecond versus nanosecond pulses. The temperature distortion of the OH band contour (3200–3600 cm −1 ) was studied by both nanosecond and picosecond Raman techniques. It was observed that the OH band centroid shifted linearly with temperature (~0.87 cm −1 °C −1 ) for both nano- and picosecond pulses. This feature of the picosecond Raman spectra was explained by the dynamics of the non-equilibrium hydrogen bond structures in water.