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Multiline Optics
Jan 2011
Research Electro-Optics Inc. (REO)Request Info
BOULDER, Colo., Jan. 27, 2011 — REO has introduced a range of optics that offer high performance, multiwavelength operation for military target designation and rangefinding applications.

The components deliver a combination of high reflectivity and transmission at multiple wavelength bands (808, 1064 and 1570 nm), while maintaining good wavefront quality in the reflected beam. The optics can accommodate high-reflection or high-transmission properties in the 3- to 5-µm spectral band, enabling common aperture forward-looking infrared applications. They provide a typical high laser damage threshold of >40 J/cm² for a 20-ns pulse at 1064 nm and exhibit good environmental stability.

This performance benchmark is difficult to achieve because multiwavelength coatings of this type are often physically thick, making it challenging to keep film absorption and defects below acceptable limits, and to control layer stress that may lead to wavefront issues. The company uses a variety of fabrication and coating technologies, including advanced plasma source and ion-beam sputtering to enable the necessary level of control over coating structure, stoichiometry and stress.

These optics can be fabricated on a wide range of substrates, including fused silica, CaF2, ZnS, ZnSe, Si and sapphire, in sizes ranging from 0.5 to 12 in. Plano, spherical and aspheric surfaces can be produced, as can noncircular and nonrectangular geometries, including substrates with through holes.


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Not spherical; an optical element having one or more surfaces that are not spherical. The spherical surface of a lens may be slightly altered so as to reduce spherical aberration. Aspheric surfaces are frequently, but not necessarily, surfaces of revolution about the lens axis.
fused silica
Glass consisting of almost pure silicon dioxide (SiO2). Also called vitreous silica. Frequently used in optical fibers and windows.
Describing a laser that emits simultaneously at more than one wavelength.
Systeme Internationale d'Unites, the international metric system of units.
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