Figure 1 | Scientific Reports

Figure 1

From: Terahertz circular Airy vortex beams

Figure 1

Schematic diagram of the experimental setup for generating THz CAVBs. Transmitter: A 0.3-THz radiation source coupled with a diagonal horn antenna. Chopper: Optical chopper. HDPE lens: High-density polyethylene lens. Receiver: Schotkky diode coupled with a diagonal horn antenna. Component1 (R1): the first phase plate; Component2 (R2): the second phase plate. (a) The 3D-printed R1 used in the experiment. (b) The 3D-printed R2. (c) The xy normalized intensity profile of the collimated Gaussian beam at the front plane of R1, showing a diameter of 17 mm (measured at FWHM, full width at half maximum).

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