Abstract

The computer-generated hologram (CGH) has wide use in many fields but often comes at a high cost due to complex proprietary equipment. For this research, we developed a new robust computational method, and applied and tested common computer-to-film (CtF) technology to create affordable and high-resolution prints of CGHs that can be used primarily in security printing. The proposed method also allows for quick authentication with no need for a complex optical setup, while offering high-level security analysis through a simple yet robust system. Beyond the computational method, we based our research on testing material, protocol, and the optical measuring setup and derived an all-in-one, highly defined, conclusive, usable method capable of making every CGH unique.

© 2019 Optical Society of America

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