Affiliation:
1. Zhejiang Province Key Laboratory of Quantum Technology and Device School of Physics Zhejiang University Hangzhou 310058 China
Abstract
AbstractOrbital angular momentum (OAM) holography implements OAM of light as an information carrier to reconstruct holographic images, due to a physically unbounded set of orthogonal OAM modes. Here, superposed Laguerre‐Gaussian (LG) beams are employed as incident beams to achieve OAM holography. Notably, this scheme utilizes exact complex‐amplitude modulation, as opposed to mere phase‐only modulation, ensuring the maintenance of amplitude information. In the absence of a matching field, the output images retain the properties of incident beams with a varying number of bright petals in each sampling pixel. On the other hand, when specific incident beams are illuminated, the output images can be reconstructed with multiple matching fields that lead to different intensities. It is essential to recognize that the bright spot in each sampling pixel of the output image achieves its peak intensity only when the matching field is the conjugate of the incident light field. This work offers a novel perspective on reconstructing holographic images through various matching fields and modulating the brightness of distinct holographic images in OAM‐multiplexing holography. Additionally, a theoretically infinite number of bright petals in each sampling pixel can also serve as information carriers in holography.
Funder
National Natural Science Foundation of China
Subject
Condensed Matter Physics,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials