2017年8月
Measurable lower limit of thin film conductivity with parallel plate waveguide terahertz time domain spectroscopy
OPTICS LETTERS
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- 巻
- 42
- 号
- 15
- 開始ページ
- 3056
- 終了ページ
- 3059
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1364/OL.42.003056
- 出版者・発行元
- OPTICAL SOC AMER
Parallel plate waveguide (PPWG) terahertz (THz) time domain spectroscopy (TDS) is a powerful tool to investigate the properties of thin and low conductive materials. In this Letter, we determine the lower limit of detection of the PPWG-THz-TDS approach. We provide a closed-form expression of the minimal measurable conductivity by the system. The experimental results of amorphous YBa2Cu3O7-b films indicate that the factor limiting the spectroscopic modality is the waveguide device misalignment. On the other hand, the expression of the minimal detectable conductivity provides a clear scheme of optimization by increasing the waveguide length and therefore enhancing the sensitivity of the system. (C) 2017 Optical Society of America
- リンク情報
- ID情報
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- DOI : 10.1364/OL.42.003056
- ISSN : 0146-9592
- eISSN : 1539-4794
- Web of Science ID : WOS:000406940700053