M. Kozina, M. Pancaldi, C. Bernhard, T. van Driel, J. M. Glownia, P. Marsik, M. Radovic, C. A. F. Vaz, D. Zhu, S. Bonetti, U. Staub, M. C. Hoffmann
http://aip.scitation.org/doi/abs/10.1063/1.4977088
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 diffraction intensity change in the presence of microstructures on a SrTiO3thin-film sample.
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