READ ME File For 'Dataset supporting the article "15-µJ picosecond hollow-core-fiber-feedback optical parametric oscillator".' Dataset DOI: https://doi.org/10.5258/SOTON/D2667 Date that the file was created: June, 2023 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: Yudi Wu, University of Southampton Date of data collection: 2022/04/05 - 2023/03/10 Information about geographic location of data collection: Optoelectronics Research Centre, University of Southampton, U.K. Related projects: Engineering and Physical Sciences Research Council (EPSRC) funded project EP/P030181/1; EP/P027644/1; EP/V038036/1; EP/T020997/1 -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse: CC BY 4.0 Recommended citation for the data: This dataset supports the publication: AUTHORS:YUDI WU, QIANG FU, SIJING LIANG, FRANCESCO POLETTI, DAVID J. RICHARDSON AND LIN XU TITLE: 15-µJ picosecond hollow-core-fiber-feedback optical parametric oscillator JOURNAL:Optics Express PAPER DOI IF KNOWN: Links to other publicly accessible locations of the data: Links/relationships to ancillary or related data sets: -------------------- DATA & FILE OVERVIEW -------------------- This dataset contains experimental data for the paper: The figures are as follows: Fig. 2 Graphs showing the MOPA performance: (a) optical power with a linear fit against pump power for the 4th amplifier, (b) optical spectra at different powers (inset shows spectral peak with a higher resolution) and (c) optical pulse at the maximum power (inset shows the 1-MHz pulse train). Fig. 4 Graph showing the (a) cutback plot of the HCF fiber used in the fiber-feedback OPO cavity (1.35-nm resolution) Fig. 5 Graphs showing: a) the OPO’s average idler power with linear fit (black), average signal power with linear fit (red), total converted power with linear fit (green) and conversion efficiency (blue dots) against pump power (the blue line is a guide for the eye); b) the spectra of signal (red) and idler (black) from the OPO, and the pump spectrum (blue) for comparison. The inset shows the magnified signal spectrum. Fig. 6 Graphs showing: a) tunability of the signal and idler, and (b) the corresponding maximum output powers and calculated pump acceptance bandwidths. The orange dashed horizontal line marks the 1.3-nm spectral width of the pump (with the right vertical axis). Fig. 7 Graphs showing a) power stability of the OPO’s signal (red) and idler (black) at maximum output over a 1-hour time frame, and b) the OPO’s output signal pulse. Fig. 8 Beam quality measurements of signal at (a) low power and (b) at maximum power, and idler at (c) low power and (d) maximum power.