Song Qiu, Yuan Ren, Tong Liu, Chen Wang. Detection of Rotational Cylinder Speed Using Doppler Effect of Optical Vortex[J]. Acta Optica Sinica, 2020, 40(20): 2026001
- Acta Optica Sinica
- Vol. 40, Issue 20, 2026001 (2020)
Fig. 1. Motion decomposition and projection diagram of micro-scatterers. (a) Diagram of motion decomposition; (b) motion in vertical direction and along beam propagation direction projected to Poynting vector direction
Fig. 2. Schematic of phase change after structure light interacts with moving particles
Fig. 3. Different azimuth views of rotating cylinder detected by vortex light. (a) Main view; (b) moving cylinder target detected by vortex light; (c) right view
Fig. 4. Phase distribution and intensity distribution of optical vortex. (a) Phase distribution of single-mode optical vortex; (b) phase distribution of superposition-mode optical vortex; (c) intensity distribution of optical vortex along propagation direction and transverse plane
Fig. 5. Frequency shift distribution detected by single-mode and superposition-mode optical vortex. (a) Single-mode optical vortex; (b) superposition-mode optical vortex
Fig. 6. Simulation of Doppler frequency shift bandwidth changing with beam radius
Fig. 7. Doppler frequency shift distribution around the spot ring under different radius of rotational cylinder
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