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A real-time terahertz time-domain spectroscopy (THz-TDS) system based on the ASOPS technique was demonstrated. The THz TDS system had a maximum time delay of 10 ns, corresponding to a 3 m-long time delay, and a maximum frequency resolution of 100 MHz. For single-scanning measurements, we demonstrated real-time THz measurements in both time and frequency domains. The typical signal-to-noise ratio (SNR)...
Unprecedented ultrahigh-reflectance (R > 0.9995) in a one-dimensional photonic crystal (1D PC) mirror was experimentally demonstrated by using a terahertz time-domain spectroscopy (THz-TDS). The PC mirror was composed of three air gaps and four high-resistivity float zone (FZ) silicon layers, prepared by a high precision chemical mechanical polishing (CMP) machine. The power reflectance of 1D PC...
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