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We have implemented a recycled pump beam technique on a terahertz parametric oscillator (TPO). The TPO with a recycled beam produces a terahertz beam that is several times stronger than that of the conventional TPO.
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 widely tunable terahertz-wave generation using difference frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal. The frequency tuning of the BNA-DFG was obtained between 0.1 and 15 THz.
We demonstrate widely tunable terahertz-wave generation using difference frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal. The frequency tuning of the BNA-DFG was obtained between 0.1 and 15 THz.
A quasi-monolithic ring THz-wave parametric oscillator with the size of 20times35 mm2 was demonstrated. The oscillation threshold at 150 mum radiation was reducible to a ca. 5 mJ/pulse.
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