Fig. 1: Working principle and design of the dual-color THz SLM.
From: Dual-color terahertz spatial light modulator for single-pixel imaging
a Schematic diagram of the dual-color THz SLM. b Exploded view of the THz SLM. The resonant structures are on the back of the top quartz substrate, and the pixelated gold patches are on the front of the bottom quartz substrate. The thicknesses of the upper and lower quartz substrate are 300 and 500 μm, respectively, the thickness of the LC layer is 10 μm, and the side length of SLM (w) is 19.7 mm. c Simulated reflectance spectra of the SLM for different permittivities of LC (εLC). The inset is the unit cell of the MMA with d = 240 μm and b = 173 μm
