Dataset for Paper: High-energy terahertz surface optical rectification

Data for a research paper published in Nano Energy April 2018 The data provided is the data used to compile each of the 10 figures in the research paper. The .txt files contain the variables for the measured raw data contained in the related .mat file.The format of the raw data is .mat - MATLAB binary -v7, which is compatible and portable to GNU Octave version >4.0 (tested). You will need access to the Matlab environment or GNU Octave environment to view these files.AbstractThe interest in surface terahertz emitters lies in their extremely thin active region, typically hundreds of atomic layers, and the agile surface scalability. The ultimate limit in the achievable emission is determined by the saturation of the several different mechanisms concurring to the THz frequency conversion. Although there is a very prolific debate about the contribution of each process, surface optical rectification has been highlighted as the dominant process at high excitation, but the effective limits in the conversion are largely unknown.The current state of the art suggests that in field-induced optical rectification a maximum limit of the emission may exist and it is ruled by the photocarrier induced neutralisation of the medium's surface field. This would represent the most important impediment to the application of surface optical rectification in high-energy THz emitters.We experimentally unveil novel physical insights in the THz conversion at high excitation energies mediated by the ultrafast surface optical rectification process. The main finding is that the expected total saturation of the Terahertz emission vs pump energy does not actually occur. At high energy, the surface field region contracts towards the surface. We argue that this mechanism weakens the main saturation process, re-establishing a clearly observable quadratic dependence between the emitted THz energy and the excitation. This is relevant in enabling access to intense generation at high fluences.</div

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