3D Terahertz Confocal Imaging with Chromatic Metasurface
The University of Adelaide · ARC Centre of Excellence for Transformative Meta-Optical Systems · +1 more institution
Abstract
Abstract Terahertz confocal imaging allows 3D see‐through of a non‐metallic object with high resolution. Conventional methods acquiring 3D images of thick objects suffer from limited depth‐of‐field, constrained depth resolution, and/or inconsistent spatial resolution at different depths. To address these limitations, the intrinsic chromatic aberration of a typical focusing metasurface is exploited to achieve frequency‐dependent focal lengths. An object located within this extended focal range can be readily 3D inspected by performing 2D raster scans. A rigorous analysis reveals that the focal spot maintains a constant waist diameter of 2.4 mm (equivalent to 2.2 at 275 GHz) and migrates 68.1 mm (equivalent to…
Citation impact
- FWCI
- 54.79
- Percentile
- 100%
- References
- 47
Authors
4- XYXiaolong YouCorresponding
The University of Adelaide
- RTRajour Tanyi Ako
ARC Centre of Excellence for Transformative Meta-Optical Systems, RMIT University
- SSSharath Sriram
ARC Centre of Excellence for Transformative Meta-Optical Systems, RMIT University
- WWWithawat Withayachumnankul
The University of Adelaide
Topics & keywords
- Terahertz radiation
- Confocal
- Chromatic scale
- Optics
- Terahertz metamaterials
- Optoelectronics
- Physics
- Materials science