South Laser [Attachment 1]

The power dependence on temperature at different diode currents:

• The plots are linear in sensor resistance on the x-axis
• (Top figure) At 130 mA, while the sensor resistance decreased, an abrupt change was seen at 6.73 kOhms, and while increasing it was at 8.27 kOhms. At other regions it is locally reversible, i.e., going back and forth causes the same curve to be plotted.
• (Top figure) This trend is repeatable, as the black lines show the results of the same change performed a second time.
• (Middle figure) At around 120 mA, three such abrupt changes was seen in the range the data was taken.
• (Bottom figure) Similar plot at 100 mA.

Data and notebook for plotting in Attachment 3

Conversion to Temperature

This notebook uses Rtyp values mentioned on the Rio Planex Datasheet found on the wiki documents page to obtain the plot and fit in Attachment 2.

That was used to make the temperature in deg C axes in Attachment 1.