Acta Optica Sinica, Volume. 43, Issue 7, 0726002(2023)
Optimized Measurement of Optical Rotational Doppler Shift Using Dual Fourier Analysis
Fig. 1. Sketch map of lateral displacement of vortex beam optical axis
Fig. 2. Simulation results of OAM decomposition. (a) Superposition-mode LG beam with
Fig. 3. Experimental setup of measurement of RDE
Fig. 4. Light intensity distributions collected by CCD (
Fig. 5. Results of dual Fourier analysis of signal by using impure optical vortex. Primary frequency spectra at (a) ω=30 Hz, (c) ω=40 Hz, and (e) ω=50 Hz; secondary frequency spectra at (b) ω=30 Hz, (d) ω=40 Hz, and (f) ω=50 Hz
Fig. 6. Results of dual Fourier analysis of signal by using vortex beam with lateral displacement. Primary frequency spectra at (a) ω=30 Hz, (c) ω=40 Hz, and (e) ω=50 Hz; secondary frequency spectra at (b) ω=30 Hz, (d) ω=40 Hz, and (f) ω=50 Hz
Fig. 7. Results of dual Fourier analysis of signal by using vortex beam with half of it missing. Primary frequency spectra at (a) ω=30 Hz, (c) ω=40 Hz, and (e) ω=50 Hz; secondary frequency spectra at (b) ω=30 Hz, (d) ω=40 Hz, and (f) ω=50 Hz
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Ruoyu Tang, Song Qiu, Tong Liu, Xiuqian Li, Zhengliang Liu, Yuan Ren. Optimized Measurement of Optical Rotational Doppler Shift Using Dual Fourier Analysis[J]. Acta Optica Sinica, 2023, 43(7): 0726002
Category: Physical Optics
Received: Sep. 22, 2022
Accepted: Nov. 15, 2022
Published Online: Apr. 6, 2023
The Author Email: Ren Yuan (renyuan_823@aliyun.com)