High-contrast optical vortex detection using the Talbot effect
| Autor: | Sorakrai Srisuphaphon, Sarayut Deachapunya, Surasak Chiangga, Pituk Panthong |
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| Rok vydání: | 2018 |
| Předmět: |
Physics
Diffraction Angular momentum business.industry Physics::Optics Grating 01 natural sciences Atomic and Molecular Physics and Optics Vortex 010309 optics Optics 0103 physical sciences Talbot effect Physics::Atomic Physics Electrical and Electronic Engineering Quantum information 010306 general physics business Engineering (miscellaneous) Diffraction grating Optical vortex |
| Zdroj: | Applied optics. 57(7) |
| ISSN: | 1539-4522 |
| Popis: | We apply the near-field Talbot effect to distinguish, characterize, and detect optical vortices. We perform experiments with single-, double-, multiple-slit, and grating diffraction. High-contrast image detection is achieved with the Talbot effect of a grating, even for higher than l=±1 orbital angular momentum states. Furthermore, we manipulate the vortex beam with different vortex states and use the Talbot effect for detecting. The experimental results are supported by theoretical simulations and demonstrate that the Talbot effect provides an excellent tool for optical vortex detection. |
| Databáze: | OpenAIRE |
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