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UV-NIR Polka-Dot Beamsplitters

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  • Various Beamsplitting Ratios Available
  • Insensitive to Angle of Incidence Changes
  • VIS-NIR Versions Available

UV-NIR Polka-Dot Beamsplitters feature a constant reflection/transmission ratio over a large spectral range. A vacuum deposited enhanced aluminum coating on fused silica substrates with fixed square apertures guarantees 30/70, 50/50, or 70/30 reflection/transmission ratios from 250 to 2000nm. Incident light is reflected by the coated area and is transmitted through the surrounding uncoated substrate. Since UV-NIR Polka-Dot Beamsplitters are not angle sensitive, they are ideal for splitting energy from a radiant light source with a beam diameter of at least 2mm. These beamsplitters are especially useful with broadband, extended sources, such as tungsten, halogen, deuterium, and xenon lamps, and for use in monochromators, spectrophotometers, and other optical systems.

Note: The surface of these beamsplitters is very sensitive and should never be touched when handling the optic. If cleaning is required to remove dust particles, non-contact cleaning using clean compressed air is recommended.

Common Specifications

Center to Center Spacing (mm):
0.15
Clear Aperture (%):
90
Construction:
Polka-Dot
Dimensional Tolerance (mm):
+0.0/-0.5
Thickness (mm):
1.50 ±0.1
Angle of Incidence (°):
0 - 45
Coating:
Square Aluminum (AlMgF2) Apertures
Minimum Aperture (mm):
2.00
Reflection/Transmission Tolerance (%):
±5 @ 45°
Substrate:
Fused Silica (Corning 7980)
Surface Quality:
80-50
Wavelength Range (nm):
250 - 2000
Operating Temperature (°C):
150 Maximum

Products

Dia. (mm)  Dimensions (mm)   Substrate   Reflection/Transmission Ratio (R/T)   Wavelength Range (nm)   Thickness (mm)   Compare   Stock Number   Price  Buy
12.70 - Fused Silica 20/80 250 - 2000 1.50
12.70 - Fused Silica 30/70 250 - 2000 1.50
12.70 - Fused Silica 50/50 250 - 2000 1.50
12.70 - Fused Silica 70/30 250 - 2000 1.50
12.70 - Fused Silica 80/20 250 - 2000 1.50
- 12.7 x 12.7 Fused Silica 20/80 250 - 2000 1.50
- 12.7 x 12.7 Fused Silica 30/70 250 - 2000 1.50
- 12.7 x 12.7 Fused Silica 50/50 250 - 2000 1.50
- 12.7 x 12.7 Fused Silica 70/30 250 - 2000 1.50
- 12.7 x 12.7 Fused Silica 80/20 250 - 2000 1.50
25.40 - Fused Silica 20/80 250 - 2000 1.50
25.40 - Fused Silica 30/70 250 - 2000 1.50
25.40 - Fused Silica 50/50 250 - 2000 1.50
25.40 - Fused Silica 70/30 250 - 2000 1.50
25.40 - Fused Silica 80/20 250 - 2000 1.50
- 25.4 x 25.4 Fused Silica 20/80 250 - 2000 1.50
- 25.4 x 25.4 Fused Silica 30/70 250 - 2000 1.50
- 25.4 x 25.4 Fused Silica 50/50 250 - 2000 1.50
- 25.4 x 25.4 Fused Silica 70/30 250 - 2000 1.50
- 25.4 x 25.4 Fused Silica 80/20 250 - 2000 1.50
38.00 - Fused Silica 20/80 250 - 2000 1.50
38.00 - Fused Silica 30/70 250 - 2000 1.50
38.00 - Fused Silica 50/50 250 - 2000 1.50
38.00 - Fused Silica 70/30 250 - 2000 1.50
38.00 - Fused Silica 80/20 250 - 2000 1.50
- 38.0 x 38.0 Fused Silica 20/80 250 - 2000 1.50
- 38.0 x 38.0 Fused Silica 30/70 250 - 2000 1.50
- 38.0 x 38.0 Fused Silica 50/50 250 - 2000 1.50
- 38.0 x 38.0 Fused Silica 70/30 250 - 2000 1.50
- 38.0 x 38.0 Fused Silica 80/20 250 - 2000 1.50
- 50.8 x 50.8 Fused Silica 50/50 250 - 2000 1.50

Product Details

Polka-Dot Beamsplitters offer no significant divergence from diffraction, nor are there performance issues with polarized sources. These beamsplitters are ideal for use with broadband, extended sources, such as tungsten, halogen, deuterium, and xenon lamps, and for use in monochromators, spectrophotometers, and other optical systems.

Technical Information

Custom

Edmund Optics offers comprehensive custom manufacturing services for optical and imaging components tailored to your specific application requirements. Whether in the prototyping phase or preparing for full-scale production, we provide flexible solutions to meet your needs. Our experienced engineers are here to assist—from concept to completion.

Our capabilities include:

  • Custom dimensions, materials, coatings, and more
  • High-precision surface quality and flatness
  • Tight tolerances and complex geometries
  • Scalable production—from prototype to volume

Learn more about our custom manufacturing capabilities or submit an inquiry here.