Time-resolved THz spectroscopy in a parallel plate waveguide

✍ Scribed by Cooke, David G. ;Jepsen, Peter Uhd

• Book ID: 105365300
• Publisher: John Wiley and Sons
• Year: 2009
• Tongue: English
• Weight: 271 KB
• Volume: 206
• Category: Article
• ISSN: 0031-8965
• DOI: 10.1002/pssa.200881281

✦ Synopsis

Abstract

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)