Related Experiment Video
Updated: Jan 11, 2026

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
Published on: June 7, 2019
Self-healing properties of an electromagnetic Hermite non-uniformly correlated beam by an obstacle
Abstract:
Using the generalized Huygens-Fresnel integral, we derived a theoretical formula to analyze the self-healing properties of an electromagnetic Hermite non-uniformly correlated (EMHNUC) beam in disturbed propagation, focusing on the beam's intensity, coherence, and polarization. Our results indicate that when encountering an obstacle, the beam's intensity distribution still exhibits a notable self-focusing phenomenon. Regardless of the obstacle's size, the transverse intensity distribution remains consistent with unobstructed propagation within the self-focusing range. However, beyond the self-focusing range, an increase in obstacle size results in diminished self-healing capability of the intensity distribution, requiring a longer propagation distance for recovery. Furthermore, obstacles significantly affect the polarization and coherence properties of the beam. When the obstacle is small, the degree of polarization (DOP), the state of polarization (SOP), and the degree of coherence (DOC) experience significant self-healing processes. Our results have potential applications in optical tweezers, microscopy, and optical communication.
Related Concept Videos
Deflection of a Beam
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
Dual Nature of Electromagnetic (EM) Radiation
Wavelength is the distance between two consecutive peaks (the highest point) or troughs (the lowest point) in the wave. Frequency is the number of...
Beams with Symmetric Loadings
The M/EI...
Shearing Stresses in a Beam: Problem Solving
Interference and Diffraction
Plane Electromagnetic Waves I
The EM field is assumed to be a...

