Fig. 6: Linear response of the SDV.
From: Doppler effect tailoring: extra-red shift of structured light
The probe beam is a superposed Gaussian and higher-order Bessel (ℓ = 2) beam. The beat frequency is obtained from the SDE signal detected locally by a PD, and the corresponding Doppler signal beams with dynamic rotation are visualized in Supplementary Video 2. Each data point is measured five times. The lines are theoretical predictions for the Bessel beam with different α. The anticlockwise and clockwise arrows correspond to the direction of dynamic rotation of Doppler signal beams.
