Probing Intermolecular Interactions in Binary Liquid Mixtures Using Femtosecond Laser-Induced Self-Defocusing

Sandeep Kumar Maurya; Dhiman Das; Debabrata Goswami

doi:10.1177/0003702816643547

Probing Intermolecular Interactions in Binary Liquid Mixtures Using Femtosecond Laser-Induced Self-Defocusing

Appl Spectrosc. 2016 Oct 1;70(10):1655-1661. doi: 10.1177/0003702816643547. Epub 2016 Jun 13.

Authors

Sandeep Kumar Maurya¹, Dhiman Das¹, Debabrata Goswami²

Affiliations

¹ Department of Chemistry, Indian Institute of Technology, Kanpur, India.
² Department of Chemistry, Indian Institute of Technology, Kanpur, India dgoswami@iitk.ac.in.

PMID: 27296307
DOI: 10.1177/0003702816643547

Abstract

Photo-thermal behavior of binary liquid mixtures has been studied by high repetition rate (HRR) Z-scan technique with femtosecond laser pulses. Changes in the peak-valley difference in transmittance (ΔT_P-V) for closed aperture Z-scan experiments are indicative of thermal effects induced by HRR femtosecond laser pulses. We show such indicative results can have a far-reaching impact on molecular properties and intermolecular interactions in binary liquid mixtures. Spectroscopic parameters derived from this experimental technique show that the combined effect of physical and molecular properties of the constituent binary liquids can be related to the components of the binary liquid.

Keywords: Binary liquids; High repetition femtosecond pulses; Non-linear optics; Spectroscopy; Thermal lens.