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7 results for “Ultrafast optics”
Ultrafast demagnetization of iron induced by optical vs terahertz pulses
<p>Data of longitudinal magneto-optical Kerr effect (LMOKE) probing of demagnetization following optical (Opt) and terahertz (THz) excitations in 4 nm iron film on MgO substrate.</p> <p>Pump and probe incidence angle is 50 deg, fluence is on the order of 0.1 mJ/cm^2, time step is 20 fs. In each case both rotation (Rot) and ellipticity (Elp) variations are recorded.</p> <p>Demagnetization ("Demg") traces are the signals odd in sample magnetization and even in the driving field in case of THz pump. These traces are normalized by the static LMOKE. Zeeman response ("Zeem") is odd in both magnetization and driving THz field. Measured traces are deconvoluted with the pump profile, which in case of THz pump is defined as derivative of the Zeeman response and in case of optical pump is measured through Kerr effect in diamond.</p> <p>"True" M quenching is calculated as linear combination of Rot and Elp demagnetization traces for both optical and THz excitations.</p>
Ultrafast laser-induced magneto-optical changes in resonant magnetic x-ray reflectivity
<p>Datasets for the publication "Ultrafast laser-induced magneto-optical changes in resonant magnetic x-ray reflectivity", published in Physical Review B <strong>108</strong>, 054439 (2023).</p><p> </p>
Ultrafast optical ranging using microresonator soliton frequency combs: Data deposit
<p>This content of this data deposit is the following:</p> <ul> <li>Archive ‘Microresonator design file’: A GDS-File with the design of the microresonators</li> <li>Archive ‘Figure_data’: Data shown in all figures with MATLAB scripts for exemplary plot generation.</li> <li>Archives ‘Figure2D’, ‘Figure2E’, ‘Figure3B’ and ‘Figure3D’: Raw data and executable files related to figures 2D, 2E, 3B and 3D of the publication</li> </ul> <p><strong>Further information on the archive ‘Microresonator design file’:</strong></p> <p>A free GDS viewer can be downloaded from: https://www.klayout.de.</p> <p>The designed Si<sub>3</sub>N<sub>4</sub> height was 800 nm.</p> <p><strong>Further information on the archives ‘Figure2D’, ‘Figure2E’, ‘Figure3B’ and ‘Figure3D’:</strong></p> <p>Each archive contains two folders, corresponding to two evaluation steps executed to evaluate raw measurement data. In the first step, raw data is processed into distance information. For this purpose, the folder ‘Distance_evaluation’ in each archive contains the raw data recorded in the experiments, as well as an executable file in order to process the raw data into distance data files.</p> <p>In the second step, distance data files are further processed according to the respective measurement, e.g. the computation of the Allan deviation in Fig. 2D. For this purpose, further executable files are available in the other folder in each archive. The required distance files are already copied into these folders, but can also be computed again and copy-pasted into the respective folder. The final output will be txt-files with data such as the data shown in the figures.</p> <p><strong>Instructions on running the executable files:</strong></p> <p>All executable files require Matlab Runtime version R2017a, see in each folder the readme.txt-file for further instructions. In order to process the raw data, do not rename the files and do not change the folder, within which the raw data is located. Otherwise, the executable file may not work. Likewise, do not rename any distance-files that are used for further evaluation as well as the other input files that are required for further evaluations:</p> <ul> <li>Figure3B\Profile_Comparison: ‘xCMM.txt’, ‘yCMM.txt’</li> <li>Figure3D\OCT_Comparison: ‘OCTX.txt’, ‘OCTY.txt’</li> </ul> <p>Note, that some of the executable files make use of parallel computing. Depending on the CPU available and the amount of data to be processed, the evaluation duration can vary between a few minutes and several hours.</p> <p><strong>Information on the raw data files: </strong></p> <p>The raw data of all distance measurements are .h5 files recorded using a high-speed oscilloscope with a sample rate of 80 GSa/s. For each measurement, two recordings are stored, one for the actual distance measurement, and one for the reference measurement (indicated by either ‘MES’ or ‘REF’ at the end of the file name). An h5-viewer (see e.g. https://www.hdfgroup.org/downloads/hdfview/) is recommended in order to look directly into the raw data.</p> <p><strong>Information on the distance data files</strong>:</p> <p>The output of each distance evaluation is another h5-file, containing an <em>n</em> × 6 matrix, with <em>n</em> being the number of distance values.</p> <ul> <li>The first column represents the actual distance value,</li> <li>The second column the time,</li> <li>The third column the quantity <em>ε<sub>N</sub></em> as defined in Eq. (S13) in the Supplementary Materials,</li> <li>The fourth and the fifth column the intensity of the signal received from the oscilloscope for the signal and the reference channel (scales are not the same),</li> <li>And the last column the recorded free spectral range of the measurement comb.</li> </ul> <p>Again, the files are directly accessible by using an h5-viewer.</p>
Data for 'Ultrafast strain engineering and coherent structural dynamics from resonantly driven optical phonons in LaAlO3'
<p>This folder contains all the raw data required to generate the figures in the work 'Ultrafast strain engineering and coherent structural dynamics from resonantly driven optical phonons in LaAlO3'. </p> <p> </p> <p><strong>Contents</strong></p> <p><em>Figure 2:</em></p> <p>(a) Time resolved balanced reflection data for the short and long time periods: LongTimeData.txt and ShortTimeData.txt. The corresponding Fourier spectra shown in the inset: InsetFourier_LongTimeData.txt and InsetFourier_ShortTimeData.txt</p> <p>(b) Time resolved polarization rotation data for the short and long time periods: LongTimeData.txt and ShortTimeData.txt. The corresponding Fourier spectra shown in the inset: InsetFourier_LongTimeData.txt and InsetFourier_ShortTimeData.txt</p> <p><em>Figure 3:</em></p> <p>(a) Time-resolved polarization rotation data after excitation at two different pump photon energies: trace_85meV_excitation.txt and trace_124meV_excitation.txt. Amplitude as function of central pump photon energy: Inset_Wavelength_dependence.txt and the absorption of LaAlO3: Inset_absorption.txt</p> <p>(b) The raw data for different polarizations: traces_angle_dependence.txt</p> <p>(c) The experimentally obtained (AmplitudeExperiment.txt) and DFT calculated values (AmplitudeDFT.txt).</p> <p><em>Figure 4</em></p> <p>(a) Fourier spectra (and double Gaussian fit) corresponding to time-resolved measurments after excitation at different central photon energies: FourierSpectraData.txt (and FourierSpectraFits). Inset: Extracted peak amplitude (Inset_StrainvsWavelength.txt) and Gaussian fit of the TA strain (Inset_GaussianFit.txt). </p> <p>(b)The TA/LA ratio as function of pump photon energy (SoundWaveRatio.txt) and the Lorentzian fit (RatioFit.txt). And the absorption of LaAlO3 (Absorption_coefficient.txt).</p> <p> </p> <p> </p> <p> </p> <p> </p>
Dataset of "Ultrafast Transverse Modulation of Free Electrons by Interaction with Shaped Optical Fields"
<p>This upload includes the experimentally measured and theoretically calculated energy-filtered electron spatial distributions and light profiles showing the electron beam modulation via transversely shaped light fields using an external spatial light modulator.</p>
Optimized structures for Optical control of ultrafast structural motion in a fluorescent protein
<p>QM-MM Optimized structures of the<strong> </strong>hydrogen bonding configuration in states A1, A2 and Transition State (TS) between them for rsKiiro protein on ground (s0) and first excited (s1) states. Structures were optimized at PBE0-D3/cc-pVDZ//Amber03 level.</p>
Data from: Ultrafast, all-optical coherence of molecular electron spins in room-temperature, water solution
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