Wuhong Zhang, Ziwen Wu, Jikang Wang, Lixiang Chen, "Experimental demonstration of twisted light’s diffraction theory based on digital spiral imaging," Chin. Opt. Lett. 14, 110501 (2016)
- Chinese Optics Letters
- Vol. 14, Issue 11, 110501 (2016)
Fig. 1. Schematic of the theoretical frame based on the DSI technique (see the text for details).
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 LG 3 0
Fig. 3. Spiral spectra of the triangular aperture based on DSI. (a) Intensity spectrum | A ℓ , p | 2 arg ( A ℓ , p ) ℓ C ℓ = ∑ p | A ℓ , p | 2 p z = 0
Fig. 4. Numerical (upper row) and experimental (lower row) results of diffraction of the OAM beam with ℓ = 3
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