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Multi-armed self-rotating beams for coded aperture imaging
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DOI：10.1016/j.optcom.2026.133355.png)
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Abstract
En 中文
Single and multi-armed self-rotating beams (SRBs) exhibit distinctive propagation characteristics in which the transverse intensity distribution rotates about the optical axis while remaining invariant in shape. In this study, binarized SRBs (BSRB) are generated by binarizing the conventional SRB-generating phase mask. Multi-armed SRBs are realized through phase multiplexing of multiple binary SRB phase masks. Unlike earlier demonstrations of multi-armed SRBs, where the angular separation between arms remains constant during propagation, the proposed approach produces beams with angular separation that vary with propagation distance. The generation and evolution of BSRBs are investigated through theoretical analysis, numerical simulations, and experimental measurements, showing good agreement among all three. Proof-of-concept imaging studies are performed within a coded-aperture imaging framework using different deconvolution methods, and the results demonstrate promising performance. These findings provide enhanced insight into SRB generation and dynamics, as well as their applicability to imaging. Beyond optical imaging, the proposed multi-armed SRBs are expected to have strong potential for applications in optical trapping, structured illumination microscopy, and advanced optical communication systems.
Keywords:
Self-rotating beam
Coded aperture imaging
Structured light
Journal
IF:
2.5
Papers:
595
Citations:
2.7W