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- W2078393975 abstract "We report the experimental results of generation and coherent detection of narrow linewidth tunable terahertz radiation at room temperature utilizing a difference frequency generation as a result of stimulated scattering in the nonlinear crystal of MgO:LiNbO<sub>3</sub>. The terahertz radiation was generated from an all-solid-state tunable injection-seeded THz-wave parametric generator (is-TPG), which emits the monochromatic THz-wave over a wide tunable frequency range from 0.6 THz to 2.4 THz with the linewidth of narrower than 100 MHz. Mixing of terahertz radiation (frequency &ohgr;<sub>T</sub> ) with a near-infrared intense pump pulse (frequency &ohgr;<sub>P</sub> ) results in the excitation and amplification of the difference frequency component with frequency &ohgr;<sub>i</sub> =&ohgr;<sub>P</sub> -&ohgr;<sub>T</sub>, which is detected with a InGaAsbased photodiode. We demonstrate this method a fast response and very sensitive THz-wave detection running at room temperature, which is at least three of magnitude faster and two of magnitude more sensitive than a typical Liquid-He cooling Si bolometer for detecting the quasi-cw THz-wave beam. This detection technique is possible for coherent detection, it can measure the THz electric field, not only the intensity. As a result, the phase information is preserved, the real and imaginary parts of a sample's dielectric function may be determined simultaneously with this detection." @default.
- W2078393975 created "2016-06-24" @default.
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- W2078393975 date "2007-05-04" @default.
- W2078393975 modified "2023-09-25" @default.
- W2078393975 title "Detection of coherent tunable THz-wave using of stimulated polariton scattering in MgO:LiNbO 3" @default.
- W2078393975 doi "https://doi.org/10.1117/12.722990" @default.
- W2078393975 hasPublicationYear "2007" @default.
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