I would like to see some data too but the problem with running the diode too cool is condensation. However there is no doubt that as a diode warms up its output drops. So keeping it a little cooler than room temp is a plus and keeps the output stable.
I recently ordered a meter from Sears so I will be able to measure the temperature of my Meredith cube with the TEC. I should be able to provide some more data once I get it. But I will not cool the module to the point of condensation.
Condensation is obviously an issue, though this depends on relative humidity too - so it's possible to go a bit below room temp on a dry day without any special precautions. In any case, temperature vs power measurements would be interesting... only some are provided in the diodes datasheet and for pulsed operation.
my DX100mW Red Module came today. it works great, but i cant get the focus to work. i found that it takes about 6 volts to reach full brightness.
thats using 5 nimh batteries. the laser stays nice and cold, but one of the diodes on the circuit board heats up a decent amount. (its the rather large diode right by the input voltage wires)