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In many THz Time Domain Spectroscopy configurations, the separate acquisition of background and sample measurements have significant impact on data quality due to the need to perform subsequent measurements as well as the change in beam coupling geometry due to the removal of the sample in the reference measurement. In this short paper, we report on the design and build of a dual-polarization TDS...
Terahertz (THz) transmission spectrum of metallic slit array is studied by means of terahertz time-domain spectroscopy. Frequency-selective transmission at terahertz frequencies of metallic slit array is shown experimentally and analyzed by numerical simulation. Two kinds of metallic slit array, the rectangular slits and the fractal slits, is investigated respectively. The results illustrate that...
We experimentally investigated the polarization dependence of enhanced transmission of terahertz radiation through the periodic array of sub-wavelength rectangle holes. The array patterns of rectangle holes are fabricated by the cutting of YAG laser to the copper foils with 100 mum thickness. These patterns are designed as different sizes and different shapes of rectangular holes on the copper foils...
Terahertz (THz) emission properties of p-InAs surface radiation under the different excitations of femtosecond pulses are studied by means of time-domain spectroscopy. The experimental results show that the spectral waveform and amplitude of terahertz radiation are different for the excitations with different wavelengths. The full-width of half-maximum (FWHM) of THz radiation excited by the short...
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