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

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.