Polarizing Cube Beamsplitters, Polka Dot Beamsplitters

Product catalog summary

Polarizing Cube Beamsplitters
Newport offers a range of polarizing cube beamsplitters suitable for various applications, including broadband, UV laser line, laser line, and high-energy Nd:YAG laser beamsplitters. These beamsplitters are constructed from precision right-angle prisms cemented together to minimize wavefront distortion, except for high-energy Nd:YAG cubes, which are optically contacted. Available in 12.7 mm and 25.4 mm sizes, they feature high extinction ratios and low wavefront distortion, and are compatible with Newport holders. It is important to ensure the beam enters the prism on the side marked with a dot to avoid damage.

Polka Dot Beamsplitters
The 50/50 Polka Dot Beamsplitters are made from UV fused silica substrates with an aluminum and SiO protective overcoat in a polka dot pattern. They are optimized for white light illumination applications, offering neutrality over the wavelength range of the substrate and coating, and are insensitive to angle of incidence changes. Key specifications include:

50% reflectance and 50% transmission from 250 to 2500 nm
Available in 1" diameter round or 2" square sizes
Material: UV grade fused silica
Coating: Al(SiO)
Size tolerance: +0/-0.25 mm
Thickness: 1.6 mm, ±0.20 mm
Surface quality: 60-40 scratch-dig
Surface flatness: 1λ wave both sides @ 632.8 nm
Parallelism: 30 arc sec (0.15 mrad)
Minimum beam size for 50/50 split: 0.37 inch (9.5 mm) diameter
Usable aperture: All but a 3 mm outer rim
R/T ratio: 50/50, ±5% @ 500 nm
Acceptance angle: 0° to 45°
Maximum temperature: 150°C

The transmittance and reflectance graph shows performance across wavelengths from 250 to 2500 nm. The pattern of the polka dot beamsplitters includes aluminized and clear areas, with specific dimensions provided.

Ordering Information
Models available include PDOT-1 with dimensions of 25.4 mm diameter and PDOT-2 with dimensions of 50.8 x 50.8 mm.

Catalog excerpts

Polarizing Cube Beamsplitters, Polka Dot Beamsplitters-1

Polarizing Cube Beamsplitters Newport offers a variety of polarizing cube beamsplitters to provide solutions for your application, including: broadband, UV laser line, laser line, and high-energy Nd:YAG laser polarizing cube beamsplitters. Each beamsplitter consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion (except our high-energy Nd:YAG cubes, which are optically contacted). Our polarizing cube beamsplitters are offered in 12.7 mm and 25.4 mm sizes. For more information see page 577. • High extinction ratios • Low wavefront distortion • Standard 12.7 and 25.4 mm sizes easily mount in Newport holders • A variety of products to meet specific applications P P S S NOTE: To avoid damage, beam must enter prism on the side marked with a dot. Polka Dot Beamsplitters Our 50/50 Polka Dot Beamsplitters are UV fused silica substrates coated with aluminum and SiO protective overcoat in a "polka dot" pattern. Optimized for white light illumination applications, they provide two unique advantages over traditional dielectric beam splitters: they are neutral over the wavelength range of the fused silica substrate and the aluminum coating, and they are not sensitive to angle of incidence changes. • 50% reflectance, 50% transmission from 250 to 2500 nm • Insensitive to angle of incidence changes • 1" diameter round or 2" square sizes • Ideal for white light illumination applications Specifications Material UV grade fused silica Coating Al(SiO) Size tolerance +0/-0.25 mm Thickness 1.6 mm, ±0.20 mm Edge Finish Ground and beveled Surface Quality 60-40 scratch-dig Surface Flatness 1ë wave both sides @ 632.8 nm Parallelism 30 arc sec (0.15 mrad) Min beam size for 50/50 split 0.37 inch (9.5 mm) diameter Usable aperture All but a 3 mm outer rim R/T ratio 50/50, ±5% @ 500 nm Acceptance angle 0° to 45° Maximum temperature 150°C 200 300 400 500 600 700 800 2400 2500 0 25 50 75 100 WAVELENGTH (nm) (PERCENT) TRANSMITTANCE REFLECTANCE Transmittance/Reflectance of Polka Dot Beamsplitters ALUMINIZED AREA CLEAR AREA 3.2 mm 2.5 mm DIA. ~ Pattern of Polka Dot Beam Splitters Ordering Information Model Dimensions (mm) PDOT-1 25.4 ö PDOT-2 50.8 x 50.8 550 O p t i c s WINDOWS BEAMSPLITTERS OPTICAL FILTERS POLARIZATION OPTICS DIFFRACTION GRATINGS HIGH-ENERGY OPTICS ULTRAFAST LASER OPTICS ACCESSORIES Email: [email protected] • Web: newport.com

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