Focusing ultrashort red and blue laser pulses into a gas generates terahertz pulses with unprecedented pulse energies. Such pulses enable nonlinear terahertz spectroscopy and the time-resolved study of field-induced effects.
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Reimann, K. A table-top source of strong pulses. Nature Photon 2, 596–597 (2008). https://doi.org/10.1038/nphoton.2008.191
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DOI: https://doi.org/10.1038/nphoton.2008.191
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