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. Author manuscript; available in PMC: 2018 Jan 2.
Published in final edited form as: Optica. 2017 Feb 14;4(2):243–246. doi: 10.1364/OPTICA.4.000243

Fig. 1.

Fig. 1

(a) SRS energy diagram with a Stokes and pump beam tuned to a sample’s vibrational resonance frequency, Ω0. (b) The interaction between a broadband Stokes beam and a narrow-band pump results in changes in the amplitude and phase of the initial fields. The material’s complex third-order nonlinear susceptibility is also plotted below.