Observation of spurious spectral features in mixed-powder compressed pellets measured by terahertz time-domain spectroscopy

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Abstract

Spurious loss features were observed in mixed-powder compressed pellets measured in transmission using terahertz time-domain spectroscopy. Loss features were identified in two types of pellets: PTFE-glass microspheres and PTFE-lactose. The features were found to be dependent on grain size and concentration. An explanation is proposed, based on varying optical thickness of the sample material.
Original languageEnglish
Pages (from-to)569-572
Number of pages4
JournalIEEE Transactions on Terahertz Science & Technology
Volume13
Issue number5
Early online date27 Jun 2023
DOIs
Publication statusPublished - 1 Sept 2023

Keywords

  • spectroscopy
  • terahertz radiation
  • terahertz materials
  • terahertz time-domain spectroscopy

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