Alex Berdin

A device for holographic printing that utilizes a digital holographic microscope integrated with a laser interference system was designed for the photopatterning of azobenzene-based holographic thin films. This device facilitates the rapid fabrication of diffractive optical elements in a single step. By superimposing multiple sinusoidal surface relief gratings, it is possible to create complex holographic topographies. These light-configurable topographies are advantageous for new metamaterials and applications, such as waveguide couplers used in near-eye displays. An example of its utility is the ability to combine gratings with different periods, allowing for the simultaneous diffraction of multiple wavelengths. In a dot matrix printing process, these topographies are constructed pixel by pixel, based on a reference image, to create large-area holographic elements.