READ ME File For 'Stabilisation of transverse mode purity in a radially polarised Ho:YAG laser using machine learning: Dataset' Dataset DOI: 10.5258/SOTON/D2142 ReadMe Author: Matthew Barber, University of Southampton [https://orcid.org/0000-0001-9768-6421] This dataset supports the publication: T. L. Jefferson-Brain, M. J. Barber, A. D. Coupe, W. A. Clarkson and P. C. Shardlow Stabilisation of transverse mode purity in a radially polarised Ho:YAG laser using machine learning Applied Physics B Paper DOI: 10.1007/s00340-022-07816-9 This dataset contains the data used in the generation of Figures 3, 6 and 8 in the manuscript. The figures are as follows: Fig. 3. Beam propagation factor (M2) of the radially polarised Ho:YAG laser at 28 W of incident pump power, indicating a high quality LG01 mode. Inset: near-field 1907 nm pump beam profile. Fig. 6. Variation of the radial polarisation purity as a function of incident pump power when the machine learning stabilisation is, or is not, being used. Fig. 8. Output power curves for the Ho:YAG laser with either no machine learning stabilisation, radial LG01 stabilisation or fundamental HG00 stabilisation. Date of data collection: 01/03/2019 - 01/03/2020 Information about geographic location of data collection: University of Southampton, U.K. Licence: CC BY Related projects: Development of a High-Power Radially Polarized Laser Engineering and Physical Sciences Research Council EPSRC award reference: 1921150 High Power Mid-Infrared Lasers Engineering and Physical Sciences Research Council EPSRC award reference: 2115206 Date that the file was created: February 2022