Subwavelength Diffractive Photonic Crystal Lens

We applied the principles of photonic crystal devices to the millimeter wave portion of the electromagnetic spectrum. For the lens, we have observed their collimation and imaging ability both shown in the amplitude and phase. The results described in the report shown that the diffractive photon crystal lens is a perspective candidate to subwavelength focus lens in different area of applications, including microscopy, lens array element, etc.