Single-pulse stimulated Raman scattering spectroscopy

TL;DR

This paper presents a method for acquiring high-resolution stimulated Raman scattering spectra using a single femtosecond pulse with spectral shaping, enabling straightforward resolution of low-frequency Raman lines.

Contribution

The authors introduce a novel single-pulse spectral shaping technique for stimulated Raman scattering spectroscopy, simplifying the process and improving low-frequency vibrational resolution.

Findings

High-resolution vibrational spectra obtained with a single femtosecond pulse.

Low-frequency Raman lines (<100cm^-1) are resolved straightforwardly.

Spectral shaping enables phase manipulation for enhanced spectral resolution.

Abstract

We demonstrate the acquisition of stimulated Raman scattering spectra with the use of a single femtosecond pulse. High resolution vibrational spectra are obtained by shifting the phase of a narrow band of frequencies in the broadband input pulse spectrum, using spectral shaping. The vibrational spectrum is resolved by examining the amplitude features formed in the spectrum after interaction with the sample. Using this technique, low frequency Raman lines (<100cm^-1) are resolved in a straightforward manner.