Coherent Generation and Detection of Continuous Terahertz Waves Using Two Photomixers Driven by Laser Diodes

  • Rajind Mendis
  • Cezary Sydlo
  • Jochen Sigmund
  • Michael Feiginov
  • Peter Meissner
  • Hans L. Hartnagel
Article

Abstract

We report on a completely coherent, tunable, continuous-wave THz system where, for the first-time, both the transmitter and receiver are log-periodic-antenna coupled LTG-GaAs based finger-photomixers. This compact room-temperature system exhibits signal-to-noise ratios (> 103) comparable to or better than what is reported in the literature, and has potential applications in high-resolution spectroscopy and imaging. For the purpose of demonstration, we also present results of spectroscopy measurements carried out on fused silica, which are in agreement with previously published THz-TDS measurements.

Keywords:

terahertz log-periodic antenna photomixer 

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Rajind Mendis
    • 1
  • Cezary Sydlo
    • 1
  • Jochen Sigmund
    • 1
  • Michael Feiginov
    • 1
  • Peter Meissner
    • 1
  • Hans L. Hartnagel
    • 1
  1. 1.Institute of High-Frequency EngineeringDarmstadt University of TechnologyDarmstadtGermany

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