A Single Grating-lens Focusing Two Orthogonally Polarized Beams in Opposite Direction
نویسنده
چکیده
This paper proposes a novel high-contrast grating (HCG) element that simultaneously has two distinct functions; focusing and polarizing. The phase front distribution of a diffracted wave is fitted to that of an ideal conventional lens through properly controlling only the thicknesses of each grating bar. Finally, it is confirmed that the properly designed HCG can be a polarizer as well as a lens in the same time, and the two polarized diffracted waves are focused in the opposite directions
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تاریخ انتشار 2016