• DocumentCode
    839551
  • Title

    Calibration free terahertz imaging based on 2D electro-optic sampling technique

  • Author

    Usami, M. ; Fukasawa, R. ; Tani, M. ; Watanabe, M. ; Sakai, K.

  • Author_Institution
    TOCHIGI Nikon Corp., Japan
  • Volume
    39
  • Issue
    24
  • fYear
    2003
  • Firstpage
    1746
  • Lastpage
    1747
  • Abstract
    A two-dimensional electro-optic sampling technique with polarity modulation for THz imaging is proposed and demonstrated. The polarity modulation greatly improves the signal linearity to the THz field. Combining this technique with software lock-in detection, it is found that the modulation efficiency is also improved compared to conventional optical chopping.
  • Keywords
    CCD image sensors; electro-optical modulation; signal sampling; submillimetre wave imaging; CCD camera; calibration free terahertz imaging; large-aperture photoconductive antenna; modulation efficiency; polarity modulation; signal linearity; software lock-in detection; time-domain spectroscopic imaging; two-dimensional electro-optic sampling;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:20031112
  • Filename
    1251555
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=839551