Abstract-Frequency division multiplexing THz light field imaging

Xianshun Ming,  Willie J. Padilla, Liqun Sun

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10383/103830V/Frequency-division-multiplexing-THz-light-field-imaging/10.1117/12.2282078.short

We present a single pixel frequency division multiplexing imaging system with two metamaterial spatial light modulators (SLMs) for THz light field imaging. One SLM is used for slicing/modulating the 4D light field from various sub-apertures, while the second one together with a single pixel detector to implement 2D multiplexing measurement. This system is in essential a programming aperture in the frequency domain of carrier signals in our categorization of the traditional light field acquisition systems. We propose a prototype adaption design with available elements for THz imaging. Besides, we present the frequency selection method and reconstruction algorithm for square wave modulation/carrier signals for at most 4096-voxel light field dataset.

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