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Non-Polarizing Beamsplitters

Non-Polarizing Beamsplitters




5 – 25.4 mm

Surface quality, S-D


Surface flatness, P-V

<λ/8 @ 632.8 nm*

Beamsplitting ratio

50/50 ±5%


>0.3 J/cm² @ 1064 nm, 10 ns, 10 Hz

*depending on material and size

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Non-polarizing beamsplitter cubes are used for splitting beam 50/50. The hybrid metallic-dielectric materials of the coating mean that the cubes have minimal impact on polarization of the incident beam, a factor that is extremely important in some polarization-sensitive applications. On the other hand, there are a few drawbacks to hybrid metallic-dielectric coatings. The metallic layer causes an absorption loss of about 10 % and LIDT levels are usually 10 times lower compared with only dielectric-coated non-polarizing plate beamsplitters (NPBS).

Such cubes are usually chosen for convenient handling and easy aligning of systems compared with NPBS. For example, three cubes in a line can make a 50 / 25 / 12.5 power-splitting system, which can help in R&D applications to save time on repeated experiments.

Typical Items for Non-polarizing Beamsplitter Cubes
Beamsplitter ratio Wavelength, nm Dimensions, mm Product ID
Tp=Ts=45±5%; Rp=Rs=45±5% 450-680 12.7x12.7x12.7 1-NC-1-1250
Tp=Ts=45±5%; Rp=Rs=45±5% 450-680 15x15x15 1-NC-1-1550
Tp=Ts=45±5%; Rp=Rs=45±5% 532 12.7x12.7x12.7 1-NC-2-1250
Tp=Ts=45±5%; Rp=Rs=45±5% 532 15x15x15 1-NC-2-1550
Tp=Ts=45±5%; Rp=Rs=45±5% 650-900 12.7x12.7x12.7 1-NC-7-1250
Tp=Ts=45±5%; Rp=Rs=45±5% 650-900 15x15x15 1-NC-7-1550
Tp=Ts=45±5%; Rp=Rs=45±5% 900-1200 12.7x12.7x12.7 1-NC-5-1250
Tp=Ts=45±5%; Rp=Rs=45±5% 900-1200 15x15x15 1-NC-5-1550
Tp=Ts=45±5%; Rp=Rs=45±5% 1064 12.7x12.7x12.7 1-NC-4-1250
Tp=Ts=45±5%; Rp=Rs=45±5% 1064 15x15x15 1-NC-4-1550

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