Direct probing of evanescent field for characterization of porous terahertz fibers | Zendy

Shaghik Atakaramians | Zendy; Shahraam Afshar V. | Zendy; M. Nagel | Zendy; Henrik Koblitz Rasmussen | Zendy; Ole Bang | Zendy; Tanya M. Monro | Zendy; Derek Abbott | Zendy

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Direct probing of evanescent field for characterization of porous terahertz fibers

Author(s) -

Shaghik Atakaramians,

Shahraam Afshar V.,

M. Nagel,

Henrik Koblitz Rasmussen,

Ole Bang,

Tanya M. Monro,

Derek Abbott

Publication year - 2011

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.3568892

Subject(s) - terahertz radiation , materials science , electric field , terahertz spectroscopy and technology , photoconductivity , dispersion (optics) , optics , characterization (materials science) , optoelectronics , physics , nanotechnology , quantum mechanics

We develop a technique based on a micromachined photoconductive probe-tip to characterize a terahertz (THz) porous fiber. Losses less than 0.08 cm−1 are measured in the frequency range from 0.2 to 0.35 THz, with the minimum of 0.003 cm−1 at 0.24 THz. Normalized group velocity greater than 0.8, which corresponds to dispersion values in between −1.3 and −0.5 ps/m/μm for 0.2

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