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Using a surface-emitted THz parametric oscillator, an MgO:LiNbO3-based frequency up-conversion detector and a special optical design for fast frequency tuning and achromatic THz-wave detection, we realized a room-temperature-operated THz frequency-domain spectrometer (THz-FDS).
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...
We demonstrate highly sensitive coherent detection of a monochromatic THz-wave pulse at room temperature using the frequency up-conversion in MgO:LiNbO3 combined with balanced homodyne detection. Both the intensity and phase of THz radiation are measured.
We demonstrated a continuously tunable quasi-monolithic THz-wave parametric oscillator. A 5 mol% MgO:LiNbO3 crystal within dimensions of 15 times 20 mm2 was used as a nonlinear optical crystal. Frequency-tunability of THz-wave radiation was obtained by moving the super mirror linearly. The tunable range from 1.65 to 2.71 THz was obtained, which was derived from measured idler wavelength and pump wavelength...
We developed a THz-wave parametric oscillator (TPO) with a ring-cavity configuration pumped by a 200-Hz repetition-rate Q-sw Nd:YAG laser. Three mirrors were used to form the TPO cavity, which contained an MgO:LiNbO/sub 3/ nonlinear optical crystal. THz-wave pulses synchronized with the pump repetition rate were generated, and a tunable range from 1.3 to 2.3 THz was obtained.
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