Dear All,
This is a recurring question. I posed it several years ago and was told that ISPoptics made MgF2 lenses, nominally for the IR, that also worked well in the 118-121 nm range. From experience, this was true, but a graduate student has just drilled our lens and I found that ISPoptics no longer sells MgF2 lenses. Can anyone suggest a current cost effect option here--with the important requirement that transmission is decent at 118 nm? I want particularly to ask about the now available Thorlabs MgF2 lenses. The prices are very low (under $300 for all focal lengths at d = 1"). However, on calling them they said they couldn't provide any transmission data below 200 nm. Can anyone comment on whether their lenses work well for VUV applications? If not, what are the most cost effective alternatives?
Thanks
Mark Sulkes
Tulane University
New Orleans, LA USA
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