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Local terahertz field enhancement for time-resolved x-ray diffraction

Kozina, M. ; Pancaldi, Matteo ; Bernhard, Christian ; Driel, T. van ; Glownia, J. M. ; Maršík, Premysl ; Radovic, M. ; Vaz, Carlos A. F. ; Zhu, D. ; Bonetti, Stephano ; Staub, U. ; Hoffmann, Matthias C.

In: Applied Physics Letters, 2017, vol. 110, no. 8, p. 081106

We report local field strength enhancement of single-cycle terahertz (THz) pulses in an ultrafast time-resolved x-ray diffraction experiment. We show that patterning the sample with gold microstructures increases the THz field without changing the THz pulse shape or drastically affecting the quality of the x-ray diffraction pattern. We find a five-fold increase in THz-induced x-ray...