We introduce a diffractive super-resolution display system combining an electronic encoder and a diffractive decoder network to project super-resolved images using a low-resolution spatial light modulator (SLM). This deep learning-enabled display system achieves ~4x super-resolution, corresponding to a ~16x increase in the space-bandwidth product, which was also experimentally demonstrated using 3D-fabricated diffractive decoders that operate at the THz spectrum. The design principles of this diffractive super-resolution display were also used to project high-resolution color images using a low-resolution SLM. Diffractive super-resolution image projection paves the way for developing compact, low-power, and computationally efficient high-resolution image and video display systems.
We present diffractive optical networks based on a series of passive light modulation surfaces, engineered/optimized using deep learning at the wavelength scale, to all-optically perform permutation operations, capable of achieving hundreds of thousands of interconnects between an input and an output field-of-view. We experimentally demonstrated, for the first time, a diffractive permutation network that operates at the THz part of the spectrum, realizing 625 interconnects between the input and output planes. These diffractive permutation networks can serve as channel routing and interconnection panels in the next-generation (6G) wireless communication systems with the carrier frequencies approaching THz-bands.
We report an electronic encoder (formed by a convolutional neural network) and a diffractive decoder (formed by spatially-structured diffractive layers) that are jointly optimized using deep learning to project super-resolved images at the output plane using a low-resolution spatial-light modulator (SLM). This diffractive super-resolution display performs ~4x pixel super-resolution, corresponding to a ~16x increase in the space-bandwidth product. This diffractive display was experimentally demonstrated using 3D-printed diffractive decoders operating at the THz spectrum. Diffractive super-resolution image displays can be used to build compact, low-power, and computationally efficient HR projectors operating at visible wavelengths and other parts of the electromagnetic spectrum.
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