Chunying Pei, Zhixiang Mao, Supeng Xu, Yong Xia, Yaling Yin. Interferometric Detection Method for Orbital Angular Momentum of Vortex Beams[J]. Laser & Optoelectronics Progress, 2019, 56(14): 140502
- Laser & Optoelectronics Progress
- Vol. 56, Issue 14, 140502 (2019)
Fig. 1. Experimental device diagram for generating and detecting OAM of vortex beams
Fig. 2. Schematic of generation of interference mode. (a) Spiral phase plate corresponding to LG05 beam; (b) strip diffraction grating; (c) fork grating; (d) interference petal pattern of LG05 beam; (e) circular LG05 beam
Fig. 3. Comparison of experimental and theoretical results of interference figures. (a) Experimental results; (b) theoretical results
Fig. 4. Phase plates to generate Bessel-Gaussian beams with different OAMs and corresponding petal-like interference field distributions. (a) OAM is positive; (b) OAM is negative
Fig. 5. Phase plates corresponding to high-order multi-ring Laguerre-Gaussian beam
Fig. 6. Interference figures of high-order multi-ring Laguerre-Gaussian beams
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