• Chinese Optics Letters
  • Vol. 14, Issue 11, 110501 (2016)
Wuhong Zhang, Ziwen Wu, Jikang Wang, and Lixiang Chen*
Author Affiliations
  • Department of Physics, College of Physics Science and Technology, Xiamen University, Xiamen 361005, China
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    DOI: 10.3788/COL201614.110501 Cite this Article Set citation alerts
    Wuhong Zhang, Ziwen Wu, Jikang Wang, Lixiang Chen. Experimental demonstration of twisted light’s diffraction theory based on digital spiral imaging[J]. Chinese Optics Letters, 2016, 14(11): 110501 Copy Citation Text show less
    Schematic of the theoretical frame based on the DSI technique (see the text for details).
    Fig. 1. Schematic of the theoretical frame based on the DSI technique (see the text for details).
    Experimental setup for studying the diffraction of a twisted beam from a triangular aperture. Inset (a) is the triangular aperture, (b) is the holographic grating to produce the LG30 mode, and (c) is the hologram displayed on the SLM.
    Fig. 2. Experimental setup for studying the diffraction of a twisted beam from a triangular aperture. Inset (a) is the triangular aperture, (b) is the holographic grating to produce the LG30 mode, and (c) is the hologram displayed on the SLM.
    Spiral spectra of the triangular aperture based on DSI. (a) Intensity spectrum |Aℓ,p|2, (b) phase spectrum arg(Aℓ,p) (c) ℓ spectrum Cℓ=∑p|Aℓ,p|2 as a sum over all the p indices, (d) simulation results of the total initial field at the z=0 plane.
    Fig. 3. Spiral spectra of the triangular aperture based on DSI. (a) Intensity spectrum |A,p|2, (b) phase spectrum arg(A,p) (c)  spectrum C=p|A,p|2 as a sum over all the p indices, (d) simulation results of the total initial field at the z=0 plane.
    Numerical (upper row) and experimental (lower row) results of diffraction of the OAM beam with ℓ=3, which illustrate the gradual birth of the triangular optical lattices.
    Fig. 4. Numerical (upper row) and experimental (lower row) results of diffraction of the OAM beam with =3, which illustrate the gradual birth of the triangular optical lattices.
    Wuhong Zhang, Ziwen Wu, Jikang Wang, Lixiang Chen. Experimental demonstration of twisted light’s diffraction theory based on digital spiral imaging[J]. Chinese Optics Letters, 2016, 14(11): 110501
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