Fig. 2: Generation of the superoscillatory optical trap. | Communications Physics

Fig. 2: Generation of the superoscillatory optical trap.

From: Single atom in a superoscillatory optical trap

Fig. 2

a Schematic of the optical setup. A 1064 nm laser is focused at the cold-atoms cloud position using a microscope objective. The amplitude and the phase transverse profiles are shaped by two optically conjugated spatial light modulators, labeled SLMA and SLMP, respectively. The beam profile is imaged on a CCD camera using a ×75 magnification optical system made of a second microscope objective and a lens. A dichroic mirror (DM) is used to separate the 1064 nm beam from the atomic fluorescence. The latter is sent to an Avalanche Photodiode (APD) in a photon counting mode. b Normalized image and size of the airy profile. c Normalized image of the superoscillatory profile, and size of the hotspot.

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