Figure 5
From: Fabry-Perot cavity resonance enabling highly polarization-sensitive double-layer gold grating
(a) The diagram represents the experimental set-up to characterize the linear polarization performance of the single- and the double-layer Au grating structures using an artificially linearly-polarized test target (a blackbody, a commercial wire grid polarizer, and a metal target) and type-II superlattice based MWIR camera. θ is the mutual angle of the two polarization axes of the wire grid polarizer and the fabricated Au grating. (b) MWIR images captured using the single- and double-layer Au grating samples for test target at \(\theta ={0}^{\circ },\,{45}^{\circ },\,{90}^{\circ },\,{135}^{\circ }\).
