Local Terahertz Field Enhancement for Time-Resolved X-ray Diffraction

Abstract

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 SrTiO3 thin-film sample.

arXiv comment10 pages, 4 figures

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• Anti-reflection coating design for metallic terahertz meta-materials
• Terahertz-field activation of polar skyrons
• Dirac Electrons in AC-Magnetic Fields: $\pi$-Landau Levels and Chiral Anomaly-Induced Homodyne Effect