Polarization Beamsplitter Cubes are an essential component in optical systems, designed to split a beam of light into two separate beams with distinct polarization states. These beamsplitters utilize two complementary prisms to achieve this effect, ensuring that the output beam parallel to the input is p-polarized, while the orthogonal output beam is s-polarized. This precise separation of polarization states makes these cubes invaluable in a variety of optical applications.

Constructed from high-quality BK-7 grade A optical glass, these beamsplitter cubes are available in a range of dimensions from 3.2mm to 50.8mm, with a dimensional tolerance of ±0.2mm. The angular tolerance is maintained at ±3 arc minutes, ensuring high precision in beam deviation, which is also kept within 3 arc minutes. The surface quality is rated at 60/40 for scratch and dig, providing a smooth and clear optical path.

The polarization beamsplitter coating is applied on the hypotenuse, enhancing the performance of the cube by achieving an extinction ratio greater than 100:1. The principal transmittance is optimized with Tp>95% and Ts<1%, while the principal reflectance is Rs>99% and Rp<5%. These specifications ensure that the beamsplitter performs efficiently across a wide wavelength range of 226nm to 2300nm. Additionally, an anti-reflective coating is applied to each of the four faces, reducing reflection to less than 0.25% per face.

At Tower Optical Corporation, we understand that quality is not expensive, it is priceless. We offer next-day shipping for most wavelengths and provide discounts on volume orders of 10 pieces or more. If you have specific requirements, we are more than happy to provide a custom quote.