光学学报, 2019, 39 (1): 0126017, 网络出版: 2019-05-10
涡旋光束轨道角动量检测及其性能改善 
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Orbital Angular Momentum Measurement of Vortex Beam and Its Performance Improvement
图 & 表
图 1. (a) a型和(b) b型周期渐变振幅光栅; (c) a型和(d) b型0-π二值化周期渐变相位光栅
Fig. 1. (a) a-type and (b)b-type period-gradually-changing amplitude gratings; (c) a -type and (d)b-type 0-π binary period-gradually-changing phase gratings
图 3. 涡旋光经光栅衍射示意图。(a)涡旋光束; (b)光栅; (c)衍射条纹
Fig. 3. Schematic of vortex beam diffraction by gratings. (a) Vortex beam; (b) grating; (c) diffraction patterns
图 5. 不同复制次数时的fan-out相位图。(a) 7次; (b) 9次
Fig. 5. Fan-out phase images under different number of copies. (a) 7 times; (b) 9 times
图 6. 4种周期渐变光栅的仿真结果。(a)~(d) a型周期渐变振幅光栅; (e)~(h) 0-π二值化a型周期渐变相位光栅; (i)~(l) b型周期渐变振幅光栅; (m)~(p) 0-π二值化b型周期渐变相位光栅
Fig. 6. Simulation results for four period-gradually-changing gratings. (a)-(d) a-type period-gradually-changing amplitude gratings; (e)-(h) a-type 0-π binary period-gradually-changing phase gratings; (i)-(l) b-type period-gradually-changing amplitude gratings; (m)-(p) a-type 0-π binary period-gradually-changing phase gratings
图 7. 两种环形光栅的仿真结果。(a)~(d)环形振幅光栅; (e)~(h)环形相位光栅
Fig. 7. Simulation results for two annular gratings. (a)-(d) Annular amplitude gratings; (e)-(h) annular phase gratings
图 9. 4种周期渐变光栅的检测、校正结果。(a)~(d) a型周期渐变振幅光栅; (e)~(h) 0-π二值化a型周期渐变相位光栅; (i)~(l) b型周期渐变振幅光栅; (m)~(p) 0-π二值化b型周期渐变相位光栅
Fig. 9. Experimental results of detection and correction for four period-gradually-changing gratings. (a)-(d) a-type period-gradually-changing amplitude gratings; (e)-(h) a-type 0-π binary period-gradually-changing phase gratings; (i)-(l) b-type period-gradually-changing amplitude gratings; (m)-(p) b-type 0-π binary period-gradually-changing phase gratings
柯熙政, 谢炎辰, 张颖. 涡旋光束轨道角动量检测及其性能改善[J]. 光学学报, 2019, 39(1): 0126017. Xizheng Ke, Yanchen Xie, Ying Zhang. Orbital Angular Momentum Measurement of Vortex Beam and Its Performance Improvement[J]. Acta Optica Sinica, 2019, 39(1): 0126017.
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