Terahertz Portable Handheld Spectral Reflection (PHASR) Scanner.
IEEE Access
; 8: 228024-228031, 2020.
Article
en En
| MEDLINE
| ID: mdl-35433151
ABSTRACT
We report on the development and characterization of a handheld terahertz (THz) time-domain spectroscopic scanner for broadband imaging between approximately 0.25 and 1.25 THz. We designed and fabricated a 3D-printed fiber-coupled housing which provides an alignment-free strategy for the placement and operation of the THz optics. Image formation is achieved through telecentric beam steering over a planar surface through a custom f-θ scanning lens. This design achieves a consistent resolution over the full 12 × 19 mm field of view. Broadband spectral imaging is demonstrated using a 1951 United States Air Force Resolution Test Target. The consistency of the resolution over the wide field is validated through Boehler Star resolution measurements. Finally, a practical scenario of subsurface imaging on a damaged section of an aircraft wing is demonstrated. The THz PHASR is a field-deployable imaging system with the versatility to be applied to a much broader range of targets and imaging scenarios than previously possible, from industrial non-destructive testing to clinical diagnostic imaging.
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1
Colección:
01-internacional
Banco de datos:
MEDLINE
Idioma:
En
Revista:
IEEE Access
Año:
2020
Tipo del documento:
Article
País de afiliación:
Estados Unidos