Terahertz Reflection-Mode Biological Imaging Based on InP HBT Source and Detector

Jongwon Yun, Seung Jae Oh, Kiryong Song, Dae Keun Yoon, Hye Young Son, Yuna Choi, Yong Min Huh, Jae Sung Rieh

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

This paper presents the development of an oscillator and a detector based on InP HBT technology operating near 300 GHz, and their application to terahertz reflection-mode imaging. The fabricated fundamental-mode common-base (CB) cross-coupled oscillator exhibits a peak output power of 5.3 dBm at 305.8 GHz, and the CB direct detector shows a responsivity higher than 40 kV/W and noise equivalent power lower than 35 pW/√Hz for a frequency range of 270-345 GHz. The imaging system employing the fabricated circuits as the signal source and detector was characterized for the resolution and dynamic range, and then, successfully applied for imaging various biological samples. The results show that low-power terahertz reflection-mode imaging based on solid-state electronic sources and detectors based on a commercial semiconductor technology is promising for various biomedical imaging applications.

Original languageEnglish
Article number7891606
Pages (from-to)274-283
Number of pages10
JournalIEEE Transactions on Terahertz Science and Technology
Volume7
Issue number3
DOIs
StatePublished - 1 May 2017

Keywords

  • Detectors
  • heterojunction bipolar transistors (HBTs)
  • imaging
  • oscillators
  • signal generators
  • terahertz

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