Shiyao Fu, Tonglu Wang, Shikun Zhang, Zheyuan Zhang, Yanwang Zhai, Chunqing Gao. Non-probe compensation of optical vortices carrying orbital angular momentum[J]. Photonics Research, 2017, 5(3): 251
- Photonics Research
- Vol. 5, Issue 3, 251 (2017)
Fig. 1. Concept of the GS-based non-probe pre-compensation of distorted optical vortices.
Fig. 2. Computing the pre-compensation phase mask C ( x , y ) C ( x , y ) φ ( x , y ) S ( x , y )
Fig. 3. Experimental setup. Col., collimator; L, convex lens; CCD, infrared CCD camera; ID, iris diaphragm; PM, power meter.
Fig. 4. Observed intensity profiles of optical vortices. (a) No turbulence. (b) With turbulence r 0 = 1 mm r 0 = 3 mm
Fig. 5. Received power of diverse OAM channels with or without pre-compensation when | + 2 ⟩ r 0 = 1 mm d / r 0 = 3.46 r 0 = 3 mm d / r 0 = 1.15
Fig. 6. Mode purity of vortex beams (| + 2 ⟩ | + 3 ⟩ r 0 = 1 mm | + 2 ⟩ d / r 0 = 3.46 | + 3 ⟩ d / r 0 = 4 r 0 = 3 mm | + 2 ⟩ d / r 0 = 1.15 | + 3 ⟩ d / r 0 = 1.33
Fig. 7. Mode purities of a beam with topological charge l = 2 r 0 = 1 mm r 0 = 3 mm
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