DataSet_Figures 3-4-5.zip

This is the complete DataSet of the publication<br><br>L. Peter, J. Tunesi, A. Pasquazi and M. Peccianti "Optical Pump Rectification Emission: Route to Terahertz Free-Standing Surface Potential Diagnostics"<br><br>http://www.nature.com/articles/s41598-017-08734-z<br><br><br>In particular the file contains 3 folders which identify the original source data of Figure 3, Figure 4 and Figure 5<br><br>The format of the raw data is .mat - MATLAB binary -v7, which is compatible and portable to GNU Octave version >4.0 (tested)<br><br>Descriptors of all the variables defined in the .mat files are contained in the files<br><br>Figure3_MetaData.txt<br>Figure4_MetaData.txt<br>Figure5_MetaData.txt<br><br><br>The format of the raw data is .mat - MATLAB binary -v7, which is compatible and portable to GNU Octave version >4.0 (tested)<br><br><br><br><br><br> <br

Terahertz Spatiotemporal Wave Synthesis in Random Systems

Complex media have emerged as a powerful and robust framework to control light–matter interactions designed for task-specific optical functionalities. Studies on wavefront shaping through disordered systems have demonstrated optical wave manipulation capabilities beyond conventional optics, including aberration-free and subwavelength focusing. However, achieving arbitrary and simultaneous control over the spatial and temporal features of light remains challenging. In particular, no practical solution exists for field-level arbitrary spatiotemporal control of wave packets. A new paradigm shift has emerged in the terahertz frequency domain, offering methods for absolute time-domain measurements of the scattered electric field, enabling direct field-based wave synthesis. In this work, we report the experimental demonstration of field-level control of single-cycle terahertz pulses on arbitrary spatial points through complex disordered media

Supplementary information files for Terahertz Spatiotemporal Wave Synthesis in Random Systems

© the Authors CC BY 4.0Supplementary files for article Terahertz spatiotemporal wave synthesis in random systemsComplex media have emerged as a powerful and robust framework to control light–matter interactions designed for task-specific optical functionalities. Studies on wavefront shaping through disordered systems have demonstrated optical wave manipulation capabilities beyond conventional optics, including aberration-free and subwavelength focusing. However, achieving arbitrary and simultaneous control over the spatial and temporal features of light remains challenging. In particular, no practical solution exists for field-level arbitrary spatiotemporal control of wave packets. A new paradigm shift has emerged in the terahertz frequency domain, offering methods for absolute time-domain measurements of the scattered electric field, enabling direct field-based wave synthesis. In this work, we report the experimental demonstration of field-level control of single-cycle terahertz pulses on arbitrary spatial points through complex disordered media.</p

Resonant Fully dielectric metasurfaces for ultrafast Terahertz pulse generation

Metasurfaces represent a new frontier in materials science paving for unprecedented methods of controlling electromagnetic waves, with a range of applications spanning from sensing to imaging and communications. For pulsed terahertz generation, metasurfaces offer a gateway to tuneable thin emitters that can be utilised for large-area imaging, microscopy and spectroscopy. In literature THz-emitting metasurfaces generally exhibit high absorption, being based either on metals or on semiconductors excited in highly resonant regimes. Here we propose the use of a fully dielectric semiconductor exploiting morphology-mediated resonances and inherent quadratic nonlinear response. Our system exhibits a remarkable 40-fold efficiency enhancement compared to the unpatterned at the peak of the optimised wavelength range, demonstrating its potential as scalable emitter design