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We proposed a cylindrical lens telescope tilted pulse front pumping scheme for high energy terahertz pulse generation. The optimum pump laser spectral bandwidth and crystal cooling temperature for OR in LN crystal were researched systematically. Excitated by 800-nm laser, more than 0.19 mJ energy and 0.27% efficiency terahertz pulses generation was demonstrated with the optimum bandwidth pumping and...
A single-color pump-probe system has been commissioned at the Novosibirsk free electron laser facility. Monochromatic laser radiation with a bandwidth of about 1% can be tuned within the spectral ranges of 90–240 and 30–90 μΜ. The laser emits radiation as a continuous stream of 100-ps pulses with a repetition rate of 5.6 MHz. The average radiation power can reach 100 W. The temperature of samples...
We have developed a wide frequency range tunable continuous-wave terahertz signal generator (CW THz SG) on the principle of difference frequency generation (DFG) via non-collinear phase matching in a gallium phosphide (GaP) crystal. The GaP CW THz SG has a wide frequency range, high accuracy, high stability and easy operation/maintenance. A spectrometer working as a continuous system was realized...
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