Ultrafast spatio-temporal dynamics of terahertz generation by ionizing two-color femtosecond pulses in gases

We present a combined theoretical and experimental study of spatio-temporal propagation effects in terahertz (THz) generation in gases using two-color ionizing laser pulses. The observed strong broadening of the THz spectra with increasing gas pressure reveals the prominent role of spatio-temporal reshaping and of a plasma-induced blue-shift of the pump pulses in the generation process. Results obtained from (3+1)-dimensional simulations are in good agreement with experimental findings and clarify the mechanisms responsible for THz emission.

URI

https://doi.org/10.34657/3423
https://oa.tib.eu/renate/handle/123456789/2245

Citation

Babushkin, I., Kuehn, W., Köhler, C., Skupin, S., Bergé, L., Reimann, K., et al. (2010). Ultrafast spatio-temporal dynamics of terahertz generation by ionizing two-color femtosecond pulses in gases. Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik.

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