The influence of a static electric field on a non-polar molecule has been studied by means of multiplex coherent anti-Stokes Raman scattering (M-CARS). A parallel measurement of electric field induced second harmonic generation (EFISHG) has also been led. Both techniques suggest a reorientation of the molecule due to the presence of an electric field. This phenomenon can be used to increase the chemical selectivity and the signal to non-resonant background ratio, namely, the sensitivity of the M-CARS spectroscopy.
E. Capitaine, C. Louot, N. Ould-Moussa, C. Lefort, J. F. Kaneyasu, H. Kano, D. Pagnoux, V. Couderc, and P. Leproux, "M-CARS and EFISHG study of the influence of a static electric field on a non-polar molecule," Proc. SPIE 9712, Multiphoton Microscopy in the Biomedical Sciences XVI, 97120M (Presented at SPIE BiOS: February 15, 2016; Published: 14 March 2016); https://doi.org/10.1117/12.2208847.
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