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50 results for “Interferometer”
Spectral Contamination of the 6300Å Emission in Single-Etalon Fabry-Perot Interferometers - Data
<p>Raw ".fit" image data files from Santarem Brazil and from Cachoeira Paulista Brazil are included. These raw data are used to create Figures 8, 9b, 10 and 13 of the titled publication. Filenames with prefix "bb" are CCD image exposures from the Santarem Fabry-Perot interferometer (FPI). Filenames with prefix "br" are CCD image exposures from the Cachoeira Paulista FPI. All raw images including calibration images are included. Filename suffixes carry the temporal sequence number of the exposure and a text identifier of the image type. The types are "bi" (CCD bias images); "dk" (dark images); "ff" (flat field); "la" (laser); "sk" (sky).</p> <p> </p>
Dataset for the "Modulation waveform determination in sinusoidal frequency modulated interferometers"
<p>This dataset supports the findings of the study presented in the paper "Modulation waveform determination in sinusoidal frequency modulated interferometers".</p> <p>The acquired data is saved in Python NumPy array format (.npy) and divided into four folders:</p> <ul> <li> <p><strong>Method_verification_with_PTA</strong>: This folder contains two measurements for the verification of the method proposed in the paper, as described in Section 4.1.</p> </li> <li> <p><strong>Amplitude_sweep</strong> and <strong>Frequency_sweep</strong>: These folders contain data on the characterization of laser optical frequency modulation with different modulation amplitudes and frequencies. The results of analyzing this data are presented in Section 4.2 of the paper.</p> </li> <li> <p><strong>Intensity_modulation_correction_test</strong>: This folder contains measurements for additional investigation on the influence of intensity modulation correction on the RRI method, as described in Section 4.3.</p> </li> </ul>
Non-Abelian anyon statistics through AC conductance of a Majorana interferometer
<p>We provide the raw data used to produce Fig.3 and Fig.4 of our paper "Non-Abelian anyon statistics through AC conductance of a Majorana interferometer". We also provide a s<span>hematic three-dimensional view of the consid</span><span>ered experimental device for observing non-Abelian braiding </span><span>of Ising anyons via the AC conductance.</span></p>
Raw measurements data of piezo actuator displacements, in a form of a groove pattern, obtained with a laser interferometer and a roundness instrument
<p><strong>A brief description of the repository content</strong></p> <p>The data presented here were obtained during an experimental calibration of the Taylor Hobson 130 (Leicester, UK) roundness instrument with the Thorlabs LPS710M (Thorlabs, Newton, NJ, USA) piezo actuator driven by Thorlabs PPC001 Piezo Controller and controlled with Kinesis® (Thorlabs) software. Before the calibration, the piezo actuator itself was calibrated with the Renishaw XL-80 interferometer system (Renishaw, Wotton-under-Edge, UK) along with the Renishaw small optics kit (A-8003-3244). These data are included in the repository as well.</p> <p><strong>Description of the dataset</strong></p> <p>Inside the .zip file, the data obtained with the Renishaw XL-80 laser interferometer and the Taylor Hobson 130 roundness instrument are stored in the “Renishaw_XL-80” and “Taylor_Hobson_130” folders, respectively. Each of these folders contains six subfolders: “0.24um”, “0.75um”, “2.4um”, “7.5um”, “24um”, and “75um”, which include the measurements data obtained with these devices (not simultaneously) while Thorlabs LPS710M piezo actuator was performing displacements simulating a groove pattern. The names of subfolders correspond to the groove’s depth.</p> <p>The data from the measurements performed with the Renishaw XL-80 interferometer were exported with the Laser XL system’s software and are saved with the extension “.RTX”. Two data files are available for each depth being considered that correspond to two measurement series. Inside each file, 40 s recording is stored. Eight grooves should be visible (nominal values: 1.5 s groove width, 3 s distance between subsequent grooves). The data were acquired with a 50 kS/s sampling rate.</p> <p>The data from the measurements performed with the Taylor Hobson 130 roundness instrument were exported with the Ultra® (Taylor Hobson) software and are saved with the extension “.SBF”. 30 data files are available for each depth being considered - 15 files for each of two measurement series. Inside each file, 10 s recording is stored. Two grooves should be visible (nominal values: 1 s groove width, 4 s distance between subsequent grooves). The data were acquired with a 360 S/s sampling rate.</p> <p>Caution:</p> <ul> <li>No synchronisation between the piezo actuator and XL-80 interferometer or Taylor Hobson 130 roundness instrument was used. Thus, the first or the last groove within the response to the simulated pattern might be too short to be considered valid.</li> <li>The square excitation of the piezo actuator was used. Thus, ringing oscillations near the grooves’ edges are present.</li> <li>The motion of the piezo actuator might happen to be initiated while the acquisition already had started. Thus, the first response inside each file should be analysed carefully.</li> <li>The piezo actuator did not hold time dependencies properly. The widths of simulated grooves usually differ from their nominal values to some extent.</li> </ul> <p><strong>Acknowledgement</strong></p> <p>This dataset was obtained within the 18RP01 ProbeTrace project. This project (18RP01 – ProbeTrace) has received funding from the EMPIR programme co-financed by the Participating States and from the European Union's Horizon 2020 research and innovation programme.</p> <p>Project title: Traceability for contact probe and stylus instrument measurements<br> Funder name: European Metrology Programme for Innovation and Research (EMPIR)<br> Funder ID: 10.13039/100014132<br> Grant number: 18RP01 ProbeTrace<br> Link to project homepage: http://probetrace.org/</p>
Data set from "A free-space interferometer design for optical frequency dissemination and out-of-loop characterization below the 10^{-21}-level"
<p>The data set contains the data underlying the improved out-of-loop interferometer layout performance evaluation published in Photonics Research (<a href="https://doi.org/10.1364/PRJ.485899">https://doi.org/10.1364/PRJ.485899</a>). The experimental setup and the methodology used is explained in that publication.</p> <p>The data is stored in the Matlab(R)-native file format. This proprietary file format is also readable by other numerical computing environments.</p> <p><br> The files 'data_i_*_S*.mat' contain the timeseries of the analysed continuous measurement runs in configuration S*. Each of these files includes the following variables:</p> <p>year, month, day, hour, minute, second: date at which the measurment point was acquired<br> rem_float, rem: observed 1s Lambda-averaged out-of-loop frequency deviation in Hz as float and string, respectively<br> p: measured air pressure in hPa<br> T: measured laboratory temperature inside the cover close to the interferometer in °C<br> pressure_phase_OOL: phase variations of the out-of-loop signal estimated from the measured pressure variations<br> temp_phase_OOL: phase variations of the out-of-loop signal estimated from the measured temperature variations</p> <p> </p> <p>Different barometers have been used for the pressure mesaurements. In the measurement runs for the S1 and S2PM configurations, a barometer placed in a neighboring laboratory in the same building at PTB was used to characterize pressure fluctuations. For the measurement in the S2 configuration, we used air pressure data from the climate station of the department of Hydrology and River Basin Management of the Technical University Braunschweig, which is ≈6km apart. At times of overlapping operation, we have observed matching pressure instabilities of both barometers for averaging times 𝜏>1000s, which shows that on these averaging times the exact placement of the barometer is of lesser importance.</p>
Dataset for the "Comparison of fiber interferometric sensor with a commercial interferometer for a Kibble balance velocity calibration"
<p>This dataset supports findings of the study presented in paper "Comparison of fiber interferometric sensor with a commercial interferometer for a Kibble balance velocity calibration".</p>
Propagation of optical pulses through a periodic dielectric structure (Bragg Grating) designed as a delay line interferometer. Example of a designed fiber Bragg grating.
<p>Propagation of optical pulses through a periodic dielectric structure (Bragg Grating) designed as a delay line interferometer. <br> <br> A 9 cm fiber Bragg grating is designed (and fabricated) for this purpose.</p> <p>The top video shows the simulated propagation of a single optical pulse.</p> <p>The bottom video shows the simulated propagation of a sequence of optical pulses, with relative pi-phase shifts in the last pulse, showing both constructive and destructive interferences effect</p>
Flux-Tunable Hybridization in a Double Quantum Dot Interferometer
<p>Code and datasets associated with the manuscript "Flux-Tunable Hybridization in a Double Quantum Dot Interferometer". With the code and data included here, all necessary fits and analysis can be conducted to produce the figures given in the manuscript and its supplementary material.</p> <p>Version 2: Improvements to analysis code and a correction to figure S5. See README.md for details. This version corresponds to the version accompanying the paper as submitted to a scientific journal.</p> <p>Version 3: Added the code for generating the newly added Figure 7 to make_figures.ipynb.</p>
Data for "Impact of bulk-edge coupling on observation of anyonic braiding statistics in quantum Hall interferometers"
<p>This contains the data sets for the work "Impact of bulk-edge coupling on observation of anyonic braiding statistics in quantum Hall interferometers". Data is in CVS format. </p>
Application of inverse theory for high spatial resolution reconstructions of thermospheric vector wind fields from Doppler shifts measured by a ground-based network of all-sky Fabry-Perot interferometers
<p>Several types of all-sky viewing Fabry-Perot Interferometers (FPI) have been developed since the 1990s for ground-based remote sensing of thermospheric winds. The Scanning Doppler Imager (SDI) is one such instrument, which provides temporally simultaneous line-of-sight observations from hundreds of independent look directions per instrument exposure. A geographically distributed network of such instruments increases spatial coverage and, at many locations, also provides overlapping observations along multiple independent lines-of-sight. Together, these characteristics significantly increase the density and fidelity that is possible for reconstructed thermospheric vector wind fields, compared to a traditional narrow-field FPI, but at the cost of complexity and difficulty.<br><br></p> <p>Presently, we describe an application of inverse theory to reconstruct three-component vector thermospheric neutral wind fields using data from multiple SDI instruments. The salient features of the method used here are the ability to reconstruct three-component winds on a dense grid that is sampled regularly in latitude, longitude, and time, without assuming any a-priori underlying structure of the winds. This requires solving an inverse problem that does not in general yield a unique solution unless additional constraints are enforced. We describe this step, also known also as regularization, along with the strategy used to maximize the spatial resolution of the derived wind fields by automatically determining the minimum level of regularization that can produce stable inversions. We present example results obtained from applying this technique to one night of data from a network of SDIs in Alaska, and discuss the implications of these results for current understanding of thermospheric dynamics.</p>
Data presented in the figures of "Nonlinear Mach–Zehnder interferometer with ultrabroadband squeezed light"
<p>Data presented in our paper D. B. Horoshko, M. I. Kolobov, F. Gumpert, I. Shand, F. König & M. V. Chekhova "Nonlinear Mach–Zehnder interferometer with ultrabroadband squeezed light", Journal of Modern Optics, DOI: 10.1080/09500340.2019.1674394</p>
Data for: Molecular Aharonov-Bohm Interferometers Based on Porphyrin Nanorings
<p>The directories in this dataset contain:</p> <p>./cpn<br>xyz files: Optimized geometries of the c-PN porphyrin nanorings using the GFN1-xTB method in the absence of a magnetic field. <br>txt files: Orbital energies of the c-PN porphyrin nanorings relative to its HOMO-LUMO gap center in the absence of a magnetic field calculated using the GFN1-xTB-M1 method where first number in each line is the magnetic field strength (Tesla) and the remaining numbers are the orbital energies (eV).</p> <p>./cpn_flat<br>xyz files: Optimized geometries of the flattened c-PN porphyrin nanorings using the GFN1-xTB method in the absence of a magnetic field. <br>txt files: Orbital energies of the flattened c-PN porphyrin nanorings relative to its HOMO-LUMO gap center in the absence of a magnetic field calculated using the GFN1-xTB-M1 method where the first number in each line is the magnetic field strength (Tesla) and the remaining numbers are the orbital energies (eV).</p> <p>./current<br>txt files: The calculated current as a function of the external magnetic field for the specified Fermi transport windows and electronic temperatures where the first number in each line is the magnetic field strength (Tesla) and the second number is the current (micro Amps).</p> <p>./finite_junction<br>xyz files: Optimized geometries of the finite junction model using the GFN1-xTB method in the absence of a magnetic field. <br>txt files: Orbital energies of the finite junction model relative to the HOMO-LUMO gap center of the c-P10 nanoring in the absence of a magnetic field calculated using the GFN1-xTB-M1 method where the first number in each line is the magnetic field strength (Tesla) and the remaining numbers are the orbital energies (eV).</p> <p>./fpn<br>xyz files: Optimized geometries of the f-PN porphyrin nanobelts using the GFN1-xTB method in the absence of a magnetic field. <br>txt files: Orbital energies of the f-PN porphyrin nanobelts relative to its HOMO-LUMO gap center in the absence of a magnetic field calculated using the GFN1-xTB-M1 method where the first number in each line is the magnetic field strength (Tesla) and the remaining numbers are the orbital energies (eV).</p> <p>./transmission<br>txt files: The transmission function calculation results using the NEGF+GFN1-xTB-M1 method for a number of field strengths and biased electron densities where the 1st, 2nd and 3rd numbers in each line are the energy (Hartree) relative to the HOMO-LUMO gap center of the c-P10 nanoring in the absence of a magnetic field, transmission probability, and density of states.</p> <p>./transmission_homo-1<br>txt files: The transmission function calculation results using the NEGF+GFN1-xTB-M1 method for energies around the HOMO-1 and HOMO-2 peaks for a number of field strengths where the 1st, 2nd and 3rd numbers in each line are the energy (Hartree) relative to the HOMO-LUMO gap center of the c-P10 nanoring in the absence of a magnetic field, transmission probability, and density of states.</p>
Application of inverse theory for high spatial resolution reconstructions of thermospheric vector wind fields from Doppler shifts measured by a ground-based network of all-sky Fabry-Perot interferometers
Open the record for dataset details and reuse information.
Data and Codes for "Graphene-Based Quantum Hall Interferometer with Self-Aligned Side Gates"
<p>Data and Codes for "Graphene-Based Quantum Hall Interferometer with Self-Aligned Side Gates"</p>
Measuring gravitational attraction with a lattice atom interferometer
<p>Data for article "Measuring gravity by holding atoms", Arxiv ID: https://arxiv.org/abs/2310.01344</p>
Polarimetric Radar Signatures of Lightning Initiation Processes Imaged with VHF Broadband Interferometer
<p>This spreadsheet contains the details of the lightning events analyzed in this study, including the date, time, INTF mapping information, NLDN-reported information, and the positions and location errors referred from the combined analysis of the INTF and NLDN reports. </p> <p> </p>
Dataset for "A micro-opto-mechanical glass interferometer for megahertz modulation of optical signals"
<p>This dataset contains the raw data at the basis of the graphs reported in the paper:<br>"A micro-opto-mechanical glass interferometer for megahertz modulation of optical signals"<br>by Roberto Memeo, Andrea Crespi and Roberto Osellame.</p> <p>The preprint is uploaded in the arXiv.org repository: <br> arXiv:2402.01374 https://doi.org/10.48550/arXiv.2402.01374<br>This paper is published as:<br> Optica 11, 178-183 (2024). https://doi.org/10.1364/OPTICA.506669</p> <p>It contains one CSV file per graph. Figure numbering of the arXiv preprint is followed in naming the folders.</p>
Data for "Strongly coupled edge states in a graphene quantum Hall interferometer"
<p>Repository containing the data sets and analysis code for the main figures of "Strongly coupled edge states in a graphene quantum Hall interferometer." </p> <p>Powerpoint files track data taken and notes recorded during measurement. Additional data and analysis codes are available upon request.</p>
Data and code for "Tunable Superconducting diode effect in higher-harmonic interferometers made from Al-InSb nanosheet Josephson junctions"
<p><strong>Brief Description</strong></p> <p>This repository contains data and analysis file code for "Tunable Superconducting diode effect in higher-harmonic interferometers made from Al-InSb nanosheet Josephson junctions".</p> <p><strong>Data formats</strong></p> <ul> <li>DAT: Plain-text tabular data.<br>DAT files can be visualized by Spyview, qtplot, Jupyter notebooks in ZIP files.</li> <li>SET: Instrument settings.</li> <li>PY: Measurement scripts.</li> <li>IPYNB: Jupyter notebooks with code and figures.</li> </ul>
Data from Figures in "Arbitrary-phase locking of fiber unbalanced Mach-Zehnder interferometers"
<p>The MATLAB code and data used to produce the plots within "Arbitrary-phase locking of fiber unbalanced Mach-Zehnder interferometers". </p>
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