Universal orbital angular momentum spectrum analyzer for beams
Aug 17, 2020 · Our work offers a new way to precisely measure the OAM spectra of beams and will advance the development of many applications ranging from classical to quantum physics as the OAM based large-capacity data transmissions, …
Review of vortex beam orbital angular momentum mode …
Aug 1, 2024 · Orbital angular momentum (OAM) is a new physical dimension that has revolutionized optical communication. This paper presents the common vortex beams (VBs) and the state–of–the–art methods for detecting their OAM modes.
Encoding and Multiplexing of 2D Images with Orbital Angular Momentum ...
In this work, a direct use of orbital angular momentum modes to encode/decode and multiplex two-dimensional images is realized in a scalable multiview display architecture, which can be utilized for viewing three-dimensional images from different angles.
Spectral analysis of intricate orbital angular momentum modes …
Jun 1, 2024 · Vortex beams carrying orbital angular momentum (OAM) modes offer a compelling avenue for increasing optical communication capacity. Despite significant efforts in OAM mode (de)multiplexing, challenges persist in signal demodulation and noise monitoring of …
Metasurface-Based Intelligent Identification of Total Angular Momentum ...
2 days ago · The total angular momentum (TAM), consisting of spin angular momentum (SAM) and orbital angular momentum (OAM), is a crucial indicator for characterizing the topological features of structured beams. However, current diagnostic methods have limited measurable modes, making it difficult to obtain the TAM spectrum. Here, we present a metasurface-based intelligent scheme for measuring the TAM ...
Deep-learning assisted fast orbital angular momentum complex …
Dec 23, 2023 · Analyzing the orbital angular momentum (OAM) distribution of a vortex beam is critical for OAM-based applications. Here, we propose a deep residual network (DRN) to model the relationship between characteristics of the multiplexed OAM beam and …
Measuring the orbital angular momentum spectrum with a …
It is tough work to measure the orbital angular momentum (OAM) spectrum due to the requirement of a reference light or photodetector arrays, while measuring the spin angular momentum (SAM) is readily convenient and matured. In this work, the so-called OAM–SAM nonseparable states are employed, and the OAM spectrum can be obtained only by measuring the Stokes parameters of an arbitrary light ...
Flexible Image Reconstruction in the Orbital Angular Momentum …
Jun 29, 2022 · Here, a decoding method is proposed by using a binarized phase map derived from an autofocusing Airy beam. By adjusting the parameters of the phase map, the position and intensity distribution of the reconstructed image become flexibly adjustable.
Optical image rotation based on orbital angular momentum …
Oct 21, 2022 · This paper theoretically presents an optical image rotation system based on orbital angular momentum (OAM) manipulation. This system consists of two parts corresponding to OAM decomposition and OAM combination functions.
Small-angle scattering interferometry with neutron orbital angular ...
2 days ago · a Pictorial depiction of the implemented SANS interferometry with orbital angular momentum (OAM) states. Ref. 25 showed that a single array of fork-dislocation phase gratings prepares helical ...