Surface patterning of azobenzene-containing thin films using digital holography microscopy with built-in laser interference setup leads a way to rapid fabrication of diffractive optical elements. The light-induced mass-migration of photochromic materials enables the formation of topographies in a one-step photolithographic process, which is a challenge to existing microfabrication methods. A method for in-situ metrology of surface modifications enables the study and control of the inscribed patterns. As example, we present high-resolution and large-area optical elements that were produced by forming the topographies pixel by pixel according to a digital twin.
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