The Effects of Laser Polarization on The Performance of Terahertz Time-domain Spectrometer
2019
A fiber-type terahertz time-domain spectrometer was designed by combining fiber femtosecond laser with fiber-coupled photoconductive antenna. The effects of laser polarization on the terahertz time-domain waveform, intensity and spectral characteristics are studied experimentally. By precise control and optimization of the polarization state of the femtosecond laser, the time-domain pulse splitting phenomenon is eliminated, and a single peak time-domain pulse with high signal-to-noise ratio is obtained.
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