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A novel Fermi-level managed barrier diode has been developed for achieving broadband and low-noise terahertz-wave detection. The fabricated quasi-optical module detected signals at frequencies from 200 GHz to 1 THz. The typical voltage sensitivity was 1020 V/W, and the current sensitivity for a 50 Ω load was 4.5 A/W at 300 GHz for a zero-biased condition. Square-law detection with good linearity was...
A high-sensitivity, fast-response THz-wave detection using an organic nonlinear optical crystal of DAST has been demonstrated. In this report, the optimum performance of THz-wave detection was investigated in parameters such as the thickness of DAST, pump wavelength, and pumping intensity. Consequently, a higher sensitivity was obtained.
Designing an automatic phase matching device for a surface emitted terahertz-wave (THz) parametric oscillator and a THz-wave detection unit using parametric up-conversion in MgO:LiNbO3, we realized a frequency-agile, monochromatic THz-wave generation and detection system.
An automatic phase matching technology, integrated with an angle-tuning mirror and a telescope, was designed for a surface emitted terahertz-wave (THz) parametric oscillator and a THz-wave detection unit using parametric up-conversion in MgO:LiNbO3. A monochromatic, wide tunable THz-wave generation and detection system working at room temperature was demonstrated. The system offers a dynamic range...
Fast response, highly sensitive, Terahertz (THz)-wave detection at room temperature has been developed with an organic nonlinear crystal of DAST. In this report, tunable THz-wave detection is demonstrated by monitoring up-converted near-infrared light with an optical spectrometer. We obtained spectral information of signals at 16 THz, 19 THz, and 26 THz.
Rapidly responding, high-sensitivity terahertz (THz)-wave detection with an organic DAST crystal was demonstrated using nonlinear frequency up-conversion to near-infrared light. Detection of THz-wave signals from 16.4-THz to 26.3-THz was achieved at room temperature.
We demonstrate ultrabroadband THz wave detection using a photoconductive antenna with a combination of an ultrashort pulsed laser with 5 fs pulse duration and a DAST crystal. We successfully detected an extremely wide frequency range from 0.5 to 170 THz.
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