Fresnel Lens with Embedded Vortices

<table>Experimental setup of Fresnel lens with embedded vortices; P<sub>1</sub> and P<sub>2</sub>: Polarizers, QW<sub>1</sub> and QW<sub>2</sub>: Quarter wave plates, SLM: Spatial light modulator, and CCD: Camera.</table>

International Journal of Optics

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Figure 2

Figure 2: Fresnel Lens with Embedded Vortices 