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  • Polarizing Beamsplitter Cubes
Sep 2010
Research Electro-Optics Inc. (REO)Request Info
BOULDER, Colo., Sept. 14, 2010 — REO offers a range of polarizing beamsplitter cubes that deliver a combination of good optical performance, high laser damage resistance, and good environmental stability and durability. In terms of optical specifications, they deliver a transmitted extinction ratio as high as 10:000:1, while maintaining a transmitted wavefront distortion as low as λ/20 at 633 nm.

The cubes are assembled using proprietary Activated Covalent Bonding (ACB) technology, rather than through adhesive bonding or optical contacting. The elimination of any organics or glues from the beam path yields a high laser damage threshold and avoids internal optical absorption.

According to the company, the ACB technique produces a much stronger bond than any adhesive or optical contacting, enabling operation over a wide temperature and humidity range, without any shift in spectral response. It also makes these cubes mechanically durable and insensitive to shock, vibration and high g forces. The result is optics suitable for use anywhere from cryogenic environments to industrial, military and spaceborne applications.

The cubes are typically available in the 1- to 125-mm size range and are fabricated from either fused silica substrates, for operation in the 266-nm to 2-µm spectral band, or from silicon, for use at wavelengths from 2 to 5 µm. A scalable manufacturing process makes them cost competitive, particularly in high production volumes.


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fused silica
Glass consisting of almost pure silicon dioxide (SiO2). Also called vitreous silica. Frequently used in optical fibers and windows.
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