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  • Beamsplitter Cubes

Photonics Spectra
Nov 2010
Research Electro-Optics Inc. (REO)Request Info
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 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. 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. They are suitable for use in cryogenic environments, and for industrial, military and spaceborne applications.


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Pertaining to optics and the phenomena of light.
With respect to light radiation, the restriction of the vibrations of the magnetic or electric field vector to a single plane. In a beam of electromagnetic radiation, the polarization direction is the direction of the electric field vector (with no distinction between positive and negative as the field oscillates back and forth). The polarization vector is always in the plane at right angles to the beam direction. Near some given stationary point in space the polarization direction in the beam...
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