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Subwavelength diffraction gratings with macroscopic moiré patterns generated via Laser Interference Lithography
2020
Optics Express
We propose a simple and flexible fabrication approach based on the moiré effect of photoresist gratings for rapid synthesis of apodized structures with continuously varying depth. Minor modifications in a standard laser interference lithography setup allow creating macroscopic, visible by naked eye moiré patterns that modulate the depth of subwavelength diffraction gratings. The spatial frequency of this modulation is easily controlled in a wide range, allowing to create a quasicrystal in
doi:10.1364/oe.386699
pmid:32549468
fatcat:ag2lxwpk3ranfdj4xa5wodfuhi