REVISION DATE: 29-Apr-2015 11:48:54

Mike tooks some laser data with all the tracks on to get a approximate wavelength cal. I found the pixel for each track and wavelength three ways. The simplest was to just find the maximum value for the track (this does not take into account that the wavelength may not be centered on the pixel. The second two ways are using Gausiann fitting programs: mygaussfit and gaussfit. They where downloaded from the Matlab userfiles so not guarantees of how they work. This should find a truier center pixel for the laser data. One other issue is how accurate the laser wavelengths are.

The first graphs just shows the data for track 7. I used the data with tracks 1,4,7, 10 and 13 on. The secondset of graphs shows the laser data taken and is zoomed in on the peaks. The last three shows the relationship between the Laser wavelength and its pixel for the three ways to get the laser pixels. A second order polynomial was used and I liked the laser peaks from the mygaussfit programs so that was the one I used create the wavelength cal. The bottom of the page is a listing of the tracks, laser wavelength and laser pixels used in the polynomial fits.

 
2nd order polynomial regressions 
P(1,:) = [1.21028e-05 0.337803 345.734 ];
P(4,:) = [1.17991e-05 0.338055 345.694 ];
P(7,:) = [1.17217e-05 0.338094 345.793 ];
P(10,:) = [1.17814e-05 0.338032 345.795 ];
P(13,:) = [1.18685e-05 0.338001 345.787 ];

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

 
Track = The Resonon Track number  
Lwave = Laser Wavelength 
Lpix1 = Laser Pixel found using the max value of the track 
Lpix2 = Laser Pixel found using mygaussfit to fit the laser peak  
Lpix3 = Laser Pixel found using gaussfit to fit the laser peak
 
Track Lwave Lpix1 Lpix2 Lpix3  
    1    350       12      11.97      11.96 
    4    350       12      11.90      11.92 
    7    350       12      11.53      11.54 
   10    350       12      11.55      11.54 
   13    350       12      11.58      11.61 
    1    400      160     160.34     160.20 
    4    400      160     160.56     160.54 
    7    400      160     160.34     160.34 
   10    400      160     160.33     160.33 
   13    400      160     160.35     160.35 
    1    450      306     305.82     305.74 
    4    450      306     305.90     305.92 
    7    450      306     305.65     305.66 
   10    450      306     305.65     305.66 
   13    450      306     305.67     305.68 
    1    500      450     449.60     449.60 
    4    500      450     449.60     449.61 
    7    500      449     449.30     449.27 
   10    500      449     449.33     449.28 
   13    500      449     449.36     449.32 
    1    550      592     591.83     591.84 
    4    550      592     591.74     591.78 
    7    550      591     591.46     591.41 
   10    550      591     591.52     591.44 
   13    550      591     591.52     591.48 
    1    600      733     732.89     732.90 
    4    600      733     732.81     732.87 
    7    600      732     732.62     732.53 
   10    600      732     732.68     732.57 
   13    600      732     732.62     732.57 
    1    650      873     873.14     873.14 
    4    650      873     873.22     873.23 
    7    650      873     872.84     872.96 
   10    650      873     872.85     872.97 
   13    650      873     872.74     872.93 
    1    700     1012    1012.23    1012.23 
    4    700     1013    1012.57    1012.55 
    7    700     1012    1012.45    1012.44 
   10    700     1012    1012.45    1012.43 
   13    700     1012    1012.30    1012.31 
    1    703     1021    1020.60    1020.60 
    4    703     1021    1020.91    1020.93 
    7    703     1021    1020.82    1020.83 
   10    703     1021    1020.81    1020.82 
   13    703     1021    1020.68    1020.70