Research Journal of Optics and Photonics

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Hehe Li Author

heheli@haust.edu.cn 86 379 6423 1434 | 86 379 6423

Subjects of specialization
Vortex beam; Topological charge; Cross double-slit interference

Affiliation
School of Physics and Engineering, Henan University of Science and Technology, Luoyang, China

Biography

Hehe Li, School of Physics and Engineering, Henan University of Science and Technology, Luoyang, China he done is 60 publication on The effect of saliva on the aroma release of esters in simulated baijiu under the impact of high ethanol concentration

Publications

Research Article Open Access

Measuring the Topological Charge of Vortex Beams by the Cross Double-Slit Interference

Author(s):

Hehe Li

In this paper, we propose a simple and feasible method to measure the topological charge of vortex beams using the cross double-slit interference pattern. The cross double-slit interference pattern can be considered as the superposition of the two single-slit diffraction patterns. It is found that the topological charge of the vortex beam is equal to the number of interference intensity period when the angle between the cross double-slit varies between 0 and 2π, the sign of the topological charge can be determined by the advance or delay of the intensity evolution when the phase π/2 is added on one slit of the cross double-slit.

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