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Perspective on tailoring longitudinal structured beam and its applications
Alan E Willner1, Huibin Zhou1, Xinzhou Su1
1Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA.
Nanophotonics (Berlin, Germany)
|November 17, 2025
Summary
Researchers are exploring structured light beams with properties that change along their length. This review covers recent advancements, applications, and future directions for these unique optical beams.
Area of Science:
- Optics and Photonics
- Laser Physics
- Structured Light
Background:
- Structured light beams with spatially varying properties are crucial for advanced optical applications.
- Recent interest has focused on beams with longitudinal variations, offering novel functionalities.
- Controlling light's longitudinal characteristics presents unique challenges and opportunities.
Purpose of the Study:
- To provide a comprehensive perspective on the advancements in longitudinally structured beams.
- To highlight the diverse potential applications of these tailored optical beams.
- To identify and discuss future research opportunities in this rapidly evolving field.
Main Methods:
- This paper presents a review and perspective, synthesizing existing research.
- It analyzes the state-of-the-art in generating and characterizing longitudinally structured beams.
- Key theoretical concepts and experimental techniques are discussed.
Main Results:
- Significant progress has been made in generating and controlling beams with longitudinal structures.
- A wide range of applications, from microscopy to optical manipulation, are enabled by these beams.
- The field is characterized by rapid innovation and expanding capabilities.
Conclusions:
- Longitudinally structured beams represent a significant advancement in optical beam shaping.
- Their unique properties unlock new possibilities across various scientific and technological domains.
- Continued research promises further breakthroughs and novel applications.
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