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Figure 2
Pump–probe geometry used in the experiment to characterize scattering in high-viscosity jets. The vertically (V) polarized pump beam (green) was displaced step-wise with respect to the horizontally (H) polarized probe beam (red), so that it excited different regions located along the jet. The orange profile along the jet indicates potentially `leaked' light from the directly excited sample region (green profile) due to scattering. The probe light was cleaned up from scattered pump light contributions after the interaction zone using an aperture (grey circle) and polarizer (blue circle), located before the detector. A photograph of the actual experimental setup is shown in Fig. S24. |
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