Αποτελέσματα Αναζήτησης
28 Μαΐ 2024 · Optical imaging can characterize diverse properties of light, including amplitude, phase, wavelength, and polarization, which provides abundant information about samples, such as their morphology...
11 Ιουν 2024 · Optical phase conjugation (OPC) is a nonlinear technique used for counteracting wavefront distortions, with applications ranging from imaging to beam focusing. Here, we present a diffractive...
19 Απρ 2022 · Here we demonstrate three functional metasystems: a 15-pixel spatial pattern classifier that reaches near 90% accuracy with femtosecond inputs, a multi-channel wavelength demultiplexer, and a...
In this study, a nonlinear all-optical diffraction deep neural network (N-D 2 NN) model based on 10.6 μ m wavelength is constructed by combining the ONN and complex-valued neural networks with the nonlinear activation function introduced into the structure.
Computing metasurfaces are two-dimensional artificial nanostructures capable of performing mathematical operations on the input electromagnetic field, including its amplitude, phase, polarization, and frequency distributions.
3 Ιαν 2023 · Having derived the Fourier transforming property of a convex lens, we will now consider an important imaging system—the canonical or 4F optical processor. This is a general imaging system model which may be used to describe a large number of imaging systems with minor modifications.
7 Αυγ 2020 · Our acoustic learning experiment shows that, despite being 30 times smaller than the wavelength of sound, the fine details of images can be successfully reconstructed and recognized in the far field, which is crucially favored by the presence of absorption.
