Zheng LI, Qing SUN, Mei-qi FENG, Liang SHANG, Yu-qiang DENG, Chao-chen LI. Research on Variable Angle Fiber-Type Terahertz Time-Domain Spectrometer[J]. Spectroscopy and Spectral Analysis, 2020, 40(11): 3379
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 11, 3379 (2020)
Fig. 1. Logic diagram of fiber-type THz-TDS
Fig. 2. Schematic diagram of fiber-type THz-TDS
Fig. 3. Autocorrelation curve after femtosecond pulse passing through different lengths of PMF
Fig. 4. Autocorrelation curve after femtosecond pulse passing through DCF and PMF
Fig. 5. The terahertz signal when the angle of the polarization direction of the pump laser or the detect laser between PMF’s fast axis or slow axis are 45°
(a): The terahertz time-domain waveforms;(b): Frequency-domain spectrum
(a): The terahertz time-domain waveforms;(b): Frequency-domain spectrum
Fig. 6. The terahertz signal when the polarization direction of the pump laser and the polarization direction of the detect laser are parallel to the PMF’s fast or slow axis
(a): The terahertz time-domain waveforms;(b): Frequency-domain spectrum
(a): The terahertz time-domain waveforms;(b): Frequency-domain spectrum
Fig. 7. Photo of variable angle measurement optical path
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