READ ME File For "Transverse mode instability, thermal lensing and power scaling in Yb3+-doped high power fiber amplifiers"
Dataset DOI: 10.5258/SOTON/D0923

ReadMe Author: Prof Michael Zervas, University of Southampton

This dataset supports the publication:
AUTHORS:
TITLE: Transverse mode instability, thermal lensing and power scaling in Yb3+-doped high power fiber amplifiers
JOURNAL: Optics Express
PAPER DOI xxxxxxx



This dataset contains the data for the following figures:
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Fig. 4:  Contour plots of (a) power lower limits (in kW) due to pump brightness (blue area), SRS (green area) and TMI (orange area); and 
(b) required cladding diameter (in µm) as a function of amplifier length and core diameter.   
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Fig. 5:  Contour plots of power limits (in kW) due to pump brightness (blue area), SRS (green area) and TMI (orange area).  The mechanical-reliability dominated parameter space (grey area) is also shown. 
(a) DP with Bp= 0.02W/µm2/sr;  ?laser=0.85; ?heat= 0.10, G=10dB; 
(b) DP with Bp= 0.18W/µm2/sr;  ?laser=0.85; ?heat= 0.10, G=10dB;  
(c) DP with Bp= 0.2W/µm2/sr;  ?laser=0.85; ?heat= 0.10, G=23dB; 
(d) TP with Bp= 0.3W/µm2/sr;  ?laser=0.85; ?heat= 0.06, G=10dB.  
Core pump absorption: (a)-(c) acore=250dB/m, (d) 100dB/m.  
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Fig. 6.  (a), Maximum signal power (right axis), minimum fiber length (left axis), and 
(b) Minimum core diameter (left axis), minimum cladding diameter (right axis).  
Diode pumping (DP): ?heat=0.10, ?laser=0.85, acore=250dB/m; 
Tandem pumping (TP): ?heat=0.06, ?laser=0.90, acore=100dB/m.  
Amplifier gain G = 10dB (vertical dashed lines show the corresponding critical pump brightness).

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Fig. 7.  (a) maximum signal power, 
(b) minimum fiber length/core diameter for diode pumping (?heat=0.10, ?laser=0.80, acore=250dB/m);  
(c) maximum signal power, 
(d) minimum fiber length/core diameter for tandem pumping (?heat=0.06, ?laser=0.85, acore=100dB/m).  
Amplifier gain G = 10dB (blue lines), 15dB (green lines) and 20dB (red lines). 
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Fig. 8.  (a) the maximum achievable signal power, 
(b) the critical pump brightness, 
(c) corresponding core diameter and 
(d) the fiber length as a function of heat coefficient, 
for diode pumping (?laser=0.80 - red lines) and tandem pumping (?laser=0.85 - blue lines).  
G = 10dB.  
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Date of data collection: 1st July 2018 to 1st March 2019

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

Related projects:
EPSRC (EP/P027644/1)(EP/N00762X/1)
Royal Academy of Engineering under the Research Chairs and Senior Research Fellowships Scheme 

Licence: Creative Commons:Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/


Date that the file was created: May, 2019