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Frequency-multiplexed terahertz multiple vortex beam generation
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DOI：10.1063/5.0261433.png)
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Abstract
En 中文
We propose a simple method to generate a frequency-multiplexed terahertz multiple vortex beam using a spiral phase plate and a metallic mask. Using a broadband terahertz source, we experimentally demonstrate the conversion of a terahertz Gaussian beam into a frequency-multiplexed single or multiple vortex beam with topological charges ranging from 1 to 3, which is supported by simulations. This multifunctional device opens new possibilities for high-speed THz communication, information processing, and high-efficiency terahertz wavefront manipulation devices.
Keywords:
ANGULAR-MOMENTUM
POLARIZATION