Affordable Access

Publisher Website

The phase-controlled Raman effect

Authors
Publisher
Nature Publishing Group
Publication Date
Volume
3
Identifiers
DOI: 10.1038/srep01842
Keywords
  • Article

Abstract

Unlike spontaneous Raman effect, nonlinear Raman scattering generates fields with a well-defined phase, allowing Raman signals from individual scatterers to add up into a highly directional, high-brightness coherent beam. Here, we show that the phase of coherent Raman scattering can be accurately controlled and finely tuned by using spectrally and temporally tailored optical driver fields. In our experiments, performed with spectrally optimized phase-tunable laser pulses, such a phase control is visualized through the interference of the coherent Raman signal with the field resulting from nonresonant four-wave mixing. This interference gives rise to Fano-type profiles in the overall nonlinear response measured as a function of the delay time between the laser pulses, featuring a well-resolved destructive-interference dip on the dark side of the Raman peak. This phase-control strategy is shown to radically enhance the coherent response from weak Raman modes, thus helping confront long-standing challenges in nonlinear Raman imaging and microspectroscopy.

There are no comments yet on this publication. Be the first to share your thoughts.

Statistics

Seen <100 times
0 Comments

More articles like this

Pseudogap in cuprates driven by D-wave flux-phase...

on Journal of Physics Condensed M... Dec 03, 2014

Resonance Raman effect of benzene in gas, liquid a...

on Chemical Physics Letters Jan 01, 1979

Density effect on the raman fermi resonance in the...

on Chemical Physics Letters Jan 01, 1989
More articles like this..