Browsing by Author "Lai, Chih-Hsien"

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Terahertz scanning imaging with a subwavelength plastic fiber
(2008-02-25)
Lu, Ja-Yu
;
Chiu, Chui-Min
;
Kuo, Chung-Chiu
;
Lai, Chih-Hsien
;
Chang, Hung-Chung
The feasibility to perform terahertz imaging utilizing a terahertz subwavelength plastic fiber is investigated. Dour study shows that, With a low (<1%) fractional power inside the fiber score, 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. (C) 2008 American Institute of Physics.