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For the first time, we demonstrate heterodyne EO sampling of terahertz pulses in a DAST crystal. Compared with lithium niobate, which was used in our previous heterodyne EO sampling studies, organic DAST crystal has a 1.5 times larger EO coefficient. Our experimental results demonstrate that DAST is a very promising material for highly sensitive terahertz EO sampling.
This talk reports on both theoretical study and full-wave Maxwell simulation of the excitation and propagation of the terahertz pulse excited by the electron bunch leaving metal targets as a result of its generation by femtosecond laser pulse. Conversion coefficients of laser radiation energy into the THz electromagnetic wave for planar and wire targets have been calculated. There have been demonstrated...
Enhanced stimulated polariton scattering induced by 532 nm green laser in KTiOPO4 terahertz parametric oscillator was demonstrated in this paper. An expanded terahertz wave tuning range from 5.7 to 6.1 THz, from 7.4 to 7.8 THz, from 11.5 to 11.8 THz and from 13.3 to 13.5 THz was achieved. The maximum terahertz output energy was 1.61 μJ at 7.57 THz, additionally, the energy levels of the terahertz...
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