Fig. 2: Experimental setup. | Nature Communications

Fig. 2: Experimental setup.

From: Observation of the topological aberrations of twisted light

Fig. 2

BP, bandpass filter; ND, neutral density filter; M1, retro-reflecting mirror; PBS, polarising beam-splitter; BS, 50:50 non-polarising beam-splitter; HWP1 and HWP2, true-zero order half-wave plates; SLM, spatial light modulator; CMOS, camera sensor. The inset shows a breakdown of our reflecting object, which consists of an Au film assembled on a FS substrate and optically contacted to a FS prism.

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