17 September 1999 Achromatic diffractive optical element
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A new method for solving the dispersion problem of Diffractive Optical Elements (DOEs) is suggested. By aligning two DOEs made of different dispersive materials, the optical path differences as a function of the wavelength can be controlled. Applying this concept, a combined achromatic DOE can be designed for applications that require wavefront control using different wavelengths or wideband light sources. Numerical and simulation results are presented.
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Salman Noach, Naftali Paul Eisenberg, Yoel S. Arieli, "Achromatic diffractive optical element", Proc. SPIE 3778, Gradient Index, Miniature, and Diffractive Optical Systems, (17 September 1999); doi: 10.1117/12.363751; https://doi.org/10.1117/12.363751

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