Pulse-sequenced coherent anti-Stokes Raman scattering spectroscopy: a method for suppression of the nonresonant background

Abstract

A new technique for suppressing the nonresonant contribution to the coherent anti-Stokes Raman scattering (CARS) signal is presented. This involves two-laser three-beam CARS generation using picosecond pulses in which one of the pump beams is delayed with respect to the two others. A reduction of 2 orders of magnitude is obtained for the 656-cm⁻¹ vibrational line of CS₂ in a 10% mixture of CS₂ in toluene. This reduction is limited by the ratio of the energy in our pulse laser to that in its trailing background, which is about 100:1. Use of alternative laser systems would reduce the background by about 10¹²:1.

© 1980 Optical Society of America

Polarization suppression of the nonresonant background in femtosecond coherent anti-Stokes Raman scattering for flame thermometry at 5 kHz

Daniel R. Richardson, Devashish Bangar, and Robert P. Lucht
Opt. Express 20(19) 21495-21504 (2012)

Triple-frequency symmetric subtraction scheme for nonresonant background suppression in coherent anti-Stokes Raman scattering (CARS) microscopy

Chao Fang, Fake Lu, Wei Zheng, and Zhiwei Huang
Opt. Express 18(15) 15714-15724 (2010)

Nonresonant background suppression for coherent anti-Stokes Raman scattering microscopy using a multi-wavelength time-lens source

Bo Li, Kriti Charan, Ke Wang, Tomás Rojo, David Sinefeld, and Chris Xu
Opt. Express 24(23) 26687-26695 (2016)

Suppression of Raman-resonant interferences in rotational coherent anti-Stokes Raman spectroscopy using time-delayed picosecond probe pulses

Thomas Seeger, Johannes Kiefer, Yi Gao, Brian D. Patterson, Christopher J. Kliewer, and Thomas B. Settersten
Opt. Lett. 35(12) 2040-2042 (2010)

Pure rotational coherent anti-Stokes Raman scattering of simple gases

L. P. Goss, J. W. Fleming, and A. B. Harvey
Opt. Lett. 5(8) 345-347 (1980)