Abstract

A novel method of tuning the crossing angle, that is, the phase-matching condition, in condensed-phase CARS measurements has been presented. The method enables us to tune the phase-matching condition by simply tilting the sample cell with no need for adjusting the crossing angle of excitation laser beams over the range of about 600 cm⁻¹. To this end, a relation between the crossing angle and the frequency difference between the two excitation lasers, which is associated with the Raman shift, has been derived in the normal dispersion region and has been experimentally examined.

Compensating pulse-to-pulse fluctuations and increasing spectral reproducibility of phase-matched CARS measurements

T. A. H. M. Scholten, G. W. Lucassen, F. F. M. De Mul, and J. Greve
Appl. Opt. 27(15) 3225-3232 (1988)

CARS signals: phase matching, transverse modes, and optical damage effects

Richard E. Teets
Appl. Opt. 25(6) 855-862 (1986)

Background free CARS imaging by phase sensitive heterodyne CARS

M. Jurna, J.P. Korterik, C. Otto, J.L. Herek, and H.L. Offerhaus
Opt. Express 16(20) 15863-15869 (2008)

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)

Dual broadband CARS for simultaneous, multiple species measurements

Alan C. Eckbreth and Torger J. Anderson
Appl. Opt. 24(16) 2731-2736 (1985)