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Proceedings Paper

Design and fabrication of hollow flexible terahertz waveguides
Author(s): N. Arunkumar; R. H. Giles; T. Goyette; J. Kumar; W. E. Nixon
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Paper Abstract

A low loss, hollow, flexible waveguide was designed and fabricated for the transmission of terahertz radiation. Polycarbonate and glass tubing was chosen as the base material of the waveguide. The inner surface of the dielectric tube was coated with silver using a wet chemistry method. The waveguides were fabricated in several diameters namely, 2.4 mm, 3.2 mm, 3.8 mm, and 4.6 mm. The attenuation coefficients for the waveguides were measured at a wavelength of 215 μm using an optically pumped terahertz laser. The free space Gaussian mode from the terahertz laser source was coupled into the lowest loss TE11 mode inside the waveguide. The mode profiles of the output beam from the waveguides were shown. A loss of 3.5 dB/m was measured for the silver coated dielectric tube of diameter 4.6 mm.

Paper Details

Date Published: 26 April 2010
PDF: 9 pages
Proc. SPIE 7671, Terahertz Physics, Devices, and Systems IV: Advanced Applications in Industry and Defense, 76710S (26 April 2010); doi: 10.1117/12.863374
Show Author Affiliations
N. Arunkumar, Univ. of Massachusetts Lowell (United States)
R. H. Giles, Univ. of Massachusetts Lowell (United States)
T. Goyette, Univ. of Massachusetts Lowell (United States)
J. Kumar, Univ. of Massachusetts Lowell (United States)
W. E. Nixon, U.S. Army National Ground Intelligence Ctr. (United States)


Published in SPIE Proceedings Vol. 7671:
Terahertz Physics, Devices, and Systems IV: Advanced Applications in Industry and Defense
Mehdi Anwar; Nibir K. Dhar; Thomas W. Crowe, Editor(s)

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