First Terahertz-range Experiments on Pump – Probe Setup at Novosibirsk free Electron Laser
2016; Elsevier BV; Volume: 84; Linguagem: Inglês
10.1016/j.phpro.2016.11.027
ISSN1875-3892
AutoresYulia Yu. Choporova, V. V. Gerasimov, B. A. Knyazev, Sergey Mikhailovich Sergeev, O.A. Shevchenko, R. Kh. Zhukavin, N. V. Abrosimov, K. A. Kovalevsky, V. K. Ovchar, Heinz‐Wilhelm Hübers, Г.Н. Кулипанов, Valery N. Shastin, H. Schneider, Н.А. Винокуров,
Tópico(s)Advanced Chemical Physics Studies
ResumoA single-color pump-probe system has been commissioned at the Novosibirsk free electron laser.The laser emits a tunable monochromatic terahertz radiation.To prove the proper system operation, we investigated the time-resolved absorption of a sample of n-type germanium doped with antimony, which was previously investigated at the FELBE facility, in the temperature range from 5 to 40 K.The measured relaxation time amounted to about 1.7 ns, which agreed with the results obtained at the FELBE.The results of pump-probe measurements of non-equilibrium dynamics of hot electrons in the germanium crystal at cryogenic temperatures are presented for wavelengths of 105, 141 and 150 μm.
Referência(s)