Eric,
You're video prompted me to have a tinker this evening and measure the actual wavelength shift of a red laser diode. (So, thank you!)
I didn't bother explaining the physics behind it all in the video, just a quick, accurate emperical look-see.
I would be really interested in doing some LN2 tests of my own too; I've just ordered some bits to make a similar insulated test platform, and some low-temp thermocouples.
So not meant to be a direct comparison (and nothing we didn't know already), but:
I'll probably do something similar when the LN2 rig is setup.
Cheers,
Dan
- There is no such word as "can't" -
- 60% of the time it works every time -