You will need to let me see a pic of the inside of the driver board....or if it is a well known laser brand. If it only has two trimmer pots...I would expect one to be current to the diode and the other TEC temperature to cool the diode.
Let me know.....ME3
A pair of temperature probes will be needed to perform the tuning with a lot of time available to tune properly....max performance is not the goal as this will usually destroy the modulation abilities without jelly beaning.....in scanned lines. Pump power input levels vary so much at that point the SHG will not quickly accept the mode volume changes that rapidly......or install a larger crystal set.
On another note check to make sure that you have near 5 v on the modulation inputs before you go tuning....check with a scope....miltimeter will not read DAC outputs at his level needed to be seen with a lot of DAC's.
Last edited by MechEng3; 07-24-2011 at 04:04.
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