[Dsg-rich] Plastic plate UV transmission results

[Tyler Lemon]

Hello Marco Contalbrigo, 

As requested, Mindy and I measured the trasmittance of UV light for the acrylic plate and Lexan plate that you gave us. 

Attached is an Excel sheet of the results. 

For the transmittance test, we used the reflectivity test station with the UV light source. We used a wavelength range of 250nm - 400nm because it is the widest range we are able to test with using UV lamp and UV beamsplitter. The UV lamp is optimized for wavelengths of 200nm - 400nm while the UV beamsplitter is optimized for 250nm - 450nm. 

Just looking at the results, both plastic plates do block UV light, but the Lexan plate blocks a broader wavelength range. The acrylic plate's transmittance starts to increase significantly at ~360nm where the Lexan plate's transmittance starts to increase significantly at ~390nm. 

Best regards, 
Tyler 
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