Fluorescence of fused silica, quartz and Borofloat 33?

[Yinxiao Li]

I am trying to get a glass substrate, which is transparent. However, I need this substrate to have low fluorescence. I know fused silica, quartz and Borofloat 33 are transparent but I don't know which one has the lowest fluorescence. I checked google but can't find any data that directly compares them. Any clues?

 

[rootone]

So what you really want is material, not glass necessarily, which is maximally transparent?
Which absorbs very few photons at any wavelength?
I found this,which might be a good place to start. (maybe).
https://en.wikipedia.org/wiki/Transparent_ceramics