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Entry  Wed Apr 21 21:56:27 2010, Kevin, Update, PSL, Innolight 2W Vertical Beam Profile bp2.jpgbp2.dat
    Reply  Wed Apr 21 22:11:48 2010, rana, Update, PSL, Innolight 2W Vertical Beam Profile 
    Reply  Wed Apr 21 23:35:37 2010, Koji, Update, PSL, Innolight 2W Vertical Beam Profile 
    Reply  Thu Apr 22 21:42:24 2010, Alberto, Update, PSL, Innolight 2W Vertical Beam Profile 
Message ID: 2828     Entry time: Wed Apr 21 21:56:27 2010     Reply to this: 2829   2830   2834
Author: Kevin 
Type: Update 
Category: PSL 
Subject: Innolight 2W Vertical Beam Profile 

Koji and Kevin measured the vertical beam profile of the Innolight 2W laser at one point.

This data was taken with the laser crystal temperature at 25.04°C and the injection current at 2.092A.

The distance from the razor blade to the flat black face on the front of the laser was 13.2cm.

The data was fit to the function y(x)=a*erf(sqrt(x)*(x-x0)/w)+b with the following results.

Reduced chi squared = 14.07

x0 = (1.964 +- 0.002) mm

w  = (0.216 +- 0.004) mm

a  = (3.39  +- 0.03) V

b  = (3.46  +- 0.03) V

Attachment 1: bp2.jpg  96 kB  | Hide | Hide all
bp2.jpg
Attachment 2: bp2.dat  357 Bytes  | Hide | Hide all
razor height (mm)   Voltage (V)
2.75    6.89
2.50    6.90
2.30    6.89
2.25    6.89
2.20    6.75
2.15    6.47
2.13    6.20
2.10    6.05
2.07    5.88
... 17 more lines ...
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