Miao Yu, Yaqiu Wang, He Zhang, Yun Zhang, Fan Liu, Shuang Lin, Mingying Chang, Ting Ge, Yuanfei Jiang, Anmin Chen, Suyu Li, Mingxing Jin. Measuring Orbital Angular Momentum of Vortex Beam Using Modified Mach-Zehnder Interferometer[J]. Laser & Optoelectronics Progress, 2022, 59(17): 1705001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 17, 1705001 (2022)
Fig. 1. Schematic of experimental setup
Fig. 2. Holographic phase diagrams of LG beams with TC of (a) 2, (b) 5, and (c) 10 generated by SLM at the same incident pulse energy are (a'), (b'), and (c'), respectively
Fig. 3. Simulated interference patterns of LG beam and Gaussian beam, when the TCs of LG beam are (a) 1, (b) 5, (c) 10, (a') -1, (b') -5, and (c') -10, respectively. Initial waist radii of LG beam and Gaussian beam are 1 mm and 5 mm, respectively, and z is 0 m
Fig. 4. Simulated interference patterns of LG beam and Gaussian beam, when the TCs of LG beam are (a) 1, (b) 5, (c) 10, (a') -1, (b') -5, and (c') -10, respectively. Initial waist radii of LG beam and Gaussian beam are 1 mm and 5 mm, respectively, and z is 3 m
Fig. 5. Simulated interference patterns of LG beam and Gaussian beam, when the TCs of LG beam are (a) 1, (b) 5, (c) 10, (a') -1, (b') -5, and (c') -10, respectively. Initial waist radii of LG beam and Gaussian beam are 4 mm and 5 mm, respectively, and z is 3 m
Fig. 6. Interference patterns of Gaussian beam and LG beam whose TCs are (a) 1, (b)5, (c) 10, (a') -1,(b')-5, and (c') -10, respectively, after passing through M-Z interferometer and collected by CCD, when spot diameter of LG beam is 5 mm
Fig. 7. Interference patterns of Gaussian beam and LG beam whose TCs are (a) 1, (b) 5, (c) 10, (a') -1, (b') -5, and (c')-10, respectively, after passing through M-Z interferometer and collected by CCD, when spot diameter of LG beam is 7 mm
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