Precise phase measurement of continuous terahertz-wave based on balanced self-heterodyne technique and its application to phase-contrast imaging

@article{Koda2014PrecisePM,
  title={Precise phase measurement of continuous terahertz-wave based on balanced self-heterodyne technique and its application to phase-contrast imaging},
  author={Yuki Koda and Shintaro Hisatake and Jae-Young Kim and Akihiko Hirata and Katsuhiro Ajito and Tadao Nagatsuma},
  journal={2014 Asia-Pacific Microwave Conference},
  year={2014},
  pages={1079-1081}
}
We demonstrate that the photonics-based self-heterodyne system enables us to measure the phase change of the continuous THz-wave with the theoretical uncertainties limited by the signal-to-noise ratio (SNR) of the amplitude measurement. When the SNR was 44 dB, the standard deviation of the phase measurement was 0.37 degree, which is 10 times better than the… CONTINUE READING