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Infinity mod matrix site5/4/2023 ![]() ![]() However, the generalized viewpoint we discuss here has broader applicability. ![]() These metasurfaces, subwavelength-spaced arrays of phase-shifting elements that may be strongly form-birefringent, are the specific focus and implementation medium of this work. Over the past five or so decades, these have taken on various forms and names, among them polarization holograms ( 2, 3), polarization gratings ( 4, 5), stress-engineered optical elements ( 6), a variety of liquid crystal devices ( 7), and, more recently, metasurfaces ( 8, 9). ![]() However, a variety of holographic materials and technologies do permit the control of polarization in a spatially varying fashion. In a 1965 paper ( 1), Adolf Lohmann, a pioneer of the computer-generated hologram (CGH), remarked that while “holography” translates as “total recording” from Greek, “a hologram is not really a total recording, since only one amplitude and one phase are recorded, which would be adequate if light were a scalar wave.” As this suggests, light’s polarization is often omitted in the study of holography and diffractive optics. ![]()
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