READ ME File For 'Actively Q-switched thulium-doped silica fiber laser at 0.82 µm' Dataset DOI: https://doi.org/10.5258/SOTON/D3564. Date that the file was created: 06, 2025 ------------------- GENERAL INFORMATION ------------------- ReadMe Author: HOU CHANGSHUN, University of Southampton [OPTIONAL add ORCID ID] Date of data collection:25/03/2025 Information about geographic location of data collection: University of Southampton, B46, lab 4009. Related projects: LITECS Directly diode-pumped ultra high power fiber lasers for single fiber and beam combined directed energy -------------------------- SHARING/ACCESS INFORMATION -------------------------- Licenses/restrictions placed on the data, or limitations of reuse: Recommended citation for the data: This dataset supports the publication: AUTHORS:Changshun Hou, Ziwei Zhai, Niloptal Choudhury, Tom Harris, Jayanta k. Sahu, and Johan Nilsson. TITLE: Actively Q-switched thulium-doped silica fiber laser at 0.82 µm JOURNAL: Optics Communications PAPER DOI IF KNOWN: https://doi.org/10.1016/j.optcom.2025.132258 Links to other publicly accessible locations of the data: Links/relationships to ancillary or related data sets: -------------------- DATA & FILE OVERVIEW -------------------- This dataset is about the data of the plot for Q-switching 821 nm laser-related performance (output power, pulse energy, spectrum, time domain). This dataset contains: [Three xlxs files for the figures in the paper] [Cladding absorption spectrum and side fluorescence spectrum of gain fiber]: Measured white-light (“cold”) cladding transmission spectrum in 15 m of TDF (resolution bandwidth (RBW) 0.1 nm) and side fluorescence spectrum from 750 nm to 900 nm under 60 W pumping (RBW 2 nm). [Output power and pulse energy performance, also the optical spectrum]: Pulse energy (including inter-pulse energy) and average power versus repetition rate in Q-switched regime of operation; Optical spectrum of the Q-switched TDFL at maximum repetition rate (resolution bandwidth 1 nm). A filter suppressed wavelengths shorter than ~797 nm. [Time domain of Q-switching traces]: Temporal trace of the pulse train at maximum repetition rate of 1.025 kHz; (b) single pulse at maximum repetition rate and pump power with higher bandwidth. This dataset contains: METHODOLOGICAL INFORMATION -------------------------- The csv data was downloaded from Keysight InfiniiVision MSOX3104G oscilloscope. Description of methods used for collection/generation of data: The data of time domain was downloaded from Keysight InfiniiVision MSOX3104G oscilloscope. The optical power was from Ophir power meter; The Optical spectrum was from AQ6317B. Methods for processing the data: download the data from oscilloscope. Then you can plot Y vs X figure using software such as matlab or python. Software- or Instrument-specific information needed to interpret the data, including software and hardware version numbers: Keysight InfiniiVision MSOX3104G oscilloscope Standards and calibration information, if appropriate: Environmental/experimental conditions: University of Southampton, Building 46, Lab 4009, room temperature. Describe any quality-assurance procedures performed on the data: People involved with sample collection, processing, analysis and/or submission: Changshun Hou -------------------------- DATA-SPECIFIC INFORMATION -------------------------- Number of variables: Number of cases/rows: Variable list, defining any abbreviations, units of measure, codes or symbols used: Missing data codes: Specialized formats or other abbreviations used: