Author Affiliations
1Department of Aerospace Science and Technology, Space Engineering University, Beijing 101416, China2Office of Academic Affairs, Space Engineering University, Beijing 101416, China3Department of Basic Course, Space Engineering University, Beijing 101416, Chinashow less
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 and ; (b) OAM spectrum of superposition-mode LG beam with and ; (c) superposition-mode LG beam with half of it missing for ; (d) OAM spectrum of superposition-mode LG beam with half of it missing for
Fig. 3. Experimental setup of measurement of RDE
Fig. 4. Light intensity distributions collected by CCD (). (a) Intensity distribution of holonomic vortex beam with impure mode; (b) intensity distribution of nonholonomic vortex beam
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