Terahertz Scanning Imaging with a Subwavelength Plastic Fiber
Journal
Applied Physics Letters
Journal Volume
92
Journal Issue
8
Pages
084102
Date Issued
2008-02
Author(s)
J. Y. Lu,
C. M. Chiu,
C. C. Kuo,
C. H. Lai,
H. C. Chang,
Y. J. Hwang,
C. L. Pan,
C. K. Sun,
Abstract
The feasibility to perform fiber-scanning terahertz imaging utilizing a terahertz subwavelength plastic fiber is investigated. Our study shows that, with a low (<1%) fractional power inside the fiber core, the bending loss of the terahertz subwavelength fiber is acceptable to enable large area scanning without seriously sacrificing the signal-to-noise ratio of the acquired image. With a transmission geometry, this feasibility is demonstrated by direct two-dimensional scanning of the terahertz subwavelength fiber output end to image different biological samples and concealed substances.
Type
journal article