Abstract

We have studied the temperature dependence of resonant and nonresonant CARS signals in benzene, in toluene, and in <i>n</i>-alcohol mixtures. A cryostat was constructed to allow cooling of flowing liquids. In nonpolar solvents, the nonresonant background signal does not seem to depend on temperature, while in <i>n</i>-alcohol mixtures an enhancement of the nonlinear CARS signal is observed. Lowering temperature in these solutions enhances detectability of weak impurity lines in the resonant CARS spectrum.

Nonresonant background suppression in CARS spectra of dispersive media using phase mismatching

T. A. H. M. Scholten, G. W. Lucassen, F. F. M. De Mul, and J. Greve
Appl. Opt. 28(7) 1387-1400 (1989)

Probe-pulse optimization for nonresonant suppression in hybrid fs/ps coherent anti-Stokes Raman scattering at high temperature

Joseph D. Miller, Mikhail N. Slipchenko, and Terrence R. Meyer
Opt. Express 19(14) 13326-13333 (2011)

Species concentration measurements using CARS with nonresonant susceptibility normalization

Roger L. Farrow, Robert P. Lucht, Gary L Clark, and Richard E. Palmer
Appl. Opt. 24(14) 2241-2251 (1985)

Vibrational phase imaging in wide-field CARS for nonresonant background suppression

Juanjuan Zheng, Denis Akimov, Sandro Heuke, Michael Schmitt, Baoli Yao, Tong Ye, Ming Lei, Peng Gao, and Jürgen Popp
Opt. Express 23(8) 10756-10763 (2015)

Image formation in CARS and SRS: effect of an inhomogeneous nonresonant background medium

K. I. Popov, A. F. Pegoraro, A. Stolow, and L. Ramunno
Opt. Lett. 37(4) 473-475 (2012)