What did you use to coat your Peltier ? What kinds of results did you have ?[/quote]SenKat said:[quote author=chimo link=1191040675/0#14 date=1191233082]I did this as well with interesting results. One very key factor is the coating material on the peltier. The absorbtion and lack of susceptability to damage are important.
Well since you asked and since this was rough and dirty test, I used a very special fast drying black ink -------> a sharpie. ;D :
-Very thin means a fairly good heat transfer to the peltier
-It's fast and redily available
-You can re-apply at will
-have no idea of the reflection/absorption for different wavelengths
-not sure about durability
-susceptibility to damage from the beam (will it last long enough to get a stable reading???)
As far as results, it didn't record any results but I recall that the Glowtorch one generated about 70mV with my GB LD (@190mA) close behind (~60mV) and my DX 30 well behind those. I used one of the small double-stacked TECs.