Projector‐Induced Waveguide Encoded Lattices (ProWELs) with Optical Functionality: From Enhanced Fields of View (FOV) to 3D Data Encoding

Abstract

ABSTRACT We describe the minutes‐long fabrication of 3D waveguide architectures with an inexpensive (< $400 CAD) digital light projector. We demonstrate that Projector‐induced Waveguide Encoded Lattices (ProWELs) possess advanced functionality including tuneable Fields of View (FOV) enhanced by >400%. We also show that they serve as robust media for 3D‐encoding and subsequent, single‐step retrieval or “reading” of high‐resolution data including photographs. ProWELs are generated when the projector light launched into a photopolymer induces refractive index changes, which in turn elicit self‐trapping or modulation instability (MI)‐induced filaments of the beam. We show that these nonlinear light forms inscribe diverse waveguide geometries—ProWELs—which can be tuned in terms of waveguide diameter, lattice symmetry and long and short‐range order. Under specific conditions, self‐trapped beams and filaments spontaneously self‐organize into intricate geometries and configure additional complexity into lattices. ProWELs represent an unprecedented yet accessible class of photonic materials, which are impossible to fabricate with passive lithographic or 3D‐printing techniques. Because of their optical properties and ease of fabrication, ProWELs hold potential in applications ranging from 3D data encoding to light collecting and focusing coatings for photovoltaics.