META 2021, META'12

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Diffractive optical elements for broadband operation
P. Lalanne, C. Sauvan

Last modified: 2011-12-09


The efficiency of conventional diffractive optical elements with ├ęchelette-type profiles drops rapidly as the illumination wavelength departs from the blaze wavelength. We use the high dispersion of artificial materials to synthesize diffractive optical elements which are blazed over a broad spectral range (about one octave) or for two different wavelengths.