Pelham Research Optical

Substrate Sizes:
0.5" Dia. x 2mm
1.0" Dia. x 2.5mm
2.0" Dia. x 4mm

Substrate Specifications:
Diameter Tolerance: +0.00/0.005"
Thickness Tolerance: +/-0.25mm
Surface Figure: <2 Waves @ 632.8nm
Parallelism: <3 arc min
Scratch/Dig: 20-10
Bevel: 0.3-0.5mm x 45 Degrees
Clear Aperture: Central 85%

UV Beamsplitters

Pelham Research Optical (PRO) manufactures a Broadband UV Metallic Beamsplitter (UVBS) from 170nm to 300nm @ 45 degrees AOI with 40% to 50% average reflectance and transmission. These UVBS filters can not be covered and edge sealed. They are supplied as open-faced filters only. PRO UVBS coatings can be applied to different sized substrates to meet your instrument requirements. The light beam must enter the coated surface (reflective side) first. Metallic beamsplitters are very broad so they can cover a larger wavelength than dielectric beamsplitters. Due to their metallic coating UVBS are designed for low power applications.

Contact our Sales Department to order product, or Request a Quote.

All prices are subject to change at any time.

Click on highlighted wavelength to see curve. Opens in new window.

%R and %T Average
1.0" Dia.
2.0" Dia.

All Pelham Research Optical filters are supplied with individual VUV-UV % reflectance/transmission calibration curve detailing their VUV-UV spectral performance.

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