
READ ME File For 'Dataset title ""'

Dataset DOI: 10.5258/SOTON/D1669

ReadMe Author: Dr Jonathan Woods, University of Southampton [ORCiD.org/0000-0002-1201-4456]

This dataset supports the publication:
AUTHORS: JONATHAN R. C. WOODS, HERMANN KAHLE, ALAN C. GRAY, JAKE DAYKIN, ANNE C. TROPPER, CORIN GAWITH, MIRCEA GUINA, AND VASILIS APOSTOLOPOULOS
TITLE: High power 739 nm VECSELs for future Yb+ ion cooling
JOURNAL: Applied Optics
PAPER DOI IF KNOWN: 10.1364/AO.409970


This dataset contains:

Data and instructions for the recreation of figures included in the above publication. The figures are described below, and then our process in required detail for recreation.

The figures are as follows:

Fig. 2  Optical spectra
Fig. 3  Efficiency curves
Fig. 4  Spatial mode profile and fitting
Fig. 5  RF spectra

-------------

Figure 2
Data for figure 2 is all contained within the file “S1 S2 Combined Data Spectral.xlsx”. Sheet 1 contains the spectral tuning data for figure 2a and sheet 2 contains the spectral tuning data for figure 2b. Columns A, C, E,etc give the wavelength value corresponding to the spectral power data contained in columns B,D,F,etc. All data relating to the Optical Spectrum Analyser is contained in the header lines in column pairs A and B, C and D, etc. This is all the data that is required to reproduce figure 2.

Figure 3
Data for figure 3 is contained within “PpPvat739nm.csv”. Columns A, C, and E give the optical pump power at 532nm from the pump laser, and columns B, D, and F give the corresponding measured VECSEL emission power. The headers state the required information regarding what data corresponds to what sample used, and the output coupling percentage. In order to reproduce the figure in the publication, all pump powers need to be modified by the following coefficient:
Pump Power absorbed = [Data in columns A, C, and E] * [(0.9525*0.9525*0.99*0.9975*0.9975)*(1-0.1877)].

Or, more concisely, 
Pump Power absorbed = [Data in columns A, C, and E] * 0.726.


Figure 4

Data for figure 4 is given in files “740nmBP2.tif” and “740nmBP2_BPF_768_45.tif”. The former is the raw image of the beam profile taken directly from the camera software, while the latter is the band pass filtered version of the same image. During the band pass filtering, the values in the filename define, in pixels, the large/small features above/below which size will be ignored by the filtering algorithm. The numerical fitting to the line data in the paper figure, and indeed the whole figure itself is generated using the downloadable and free to use matlab function called “mainD2GaussFitRot.m” created by Gero Nootz available at https://www.mathworks.com/matlabcentral/fileexchange/37087-fit-2d-gaussian-function-to-data

Figure 5

Data for figure 5 is contained within file “RFSA Trace.csv”. Column A contained the frequency information in Hz, and column B contains the spectral power at that frequency. All header information describes the setup and state information for the RFSA at the time of taking the data.


Date of data collection: 12/2019 - 07/2020

Information about geographic location of data collection: University of Southampton, UK.

Licence:

Related projects:
None


Date that the file was created: 01,2021