6" 3.39 um TF

Finally got our test setup calibrated properly with this 1/20th wave PVr component, and the stability in the infrared has been rock solid. The 3.39 um wavelength handling is exactly what we needed, and the 6-inch aperture fit our existing fixtures without any modification.

We were chasing a wavefront spec for a while and finally getting 1/20th wave PVr repeatability out of this 6-inch unit. The 3.39 um transmission flat sits cleanly in our setup, and alignment took half the time it usually does. Exactly what the lab needed.

Swapped this into our optical test bench and the wavefront quality at 1/20th wave PVr is immediately noticeable in the fringe patterns. It mates perfectly with our existing 6-inch beam expander, no alignment fuss.