Time‐resolved THz spectroscopy in a parallel plate waveguide | Zendy

Cooke David G. | Zendy; Jepsen Peter Uhd | Zendy

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Time‐resolved THz spectroscopy in a parallel plate waveguide

Author(s) -

Cooke David G.,

Jepsen Peter Uhd

Publication year - 2009

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.532

H-Index - 104

eISSN - 1862-6319

pISSN - 1862-6300

DOI - 10.1002/pssa.200881281

Subject(s) - terahertz radiation , spectroscopy , waveguide , attenuation coefficient , materials science , optics , terahertz spectroscopy and technology , excitation , absorption (acoustics) , optoelectronics , physics , quantum mechanics

We demonstrate time‐resolved terahertz spectroscopy inside a novel parallel plate waveguide where one of the metallic plates is replaced by a transparent conducting oxide. Considerable improvements to the waveguide loss coefficient are shown, with a power absorption coefficient of 4 cm –1 at 0.5 THz. The time resolution of the technique is shown to be limited by the spatial excitation profile, which for sharply focused beams can approach ∼1 ps time scales. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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