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Transparent Ceramics: Enabling Large, Durable, Multifunctional Optics
Mohan Ramisetty, Lee Goldman, Nagendra Nag, Sreeram Balasubramanian and Suri Sastri, Surmet Corp.

Single-crystal sapphire has been the material of choice for defense and other applications that require extremely durable optics, but aluminum oxynitride (ALON) and magnesium aluminate (spinel) have...

Excimer Optics: High Power Demands High Reliability
Michael A. Case, Teledyne Princeton Instruments, Business Unit of Teledyne Technologies

The first high-reflectance mirror coatings for the UV and vacuum UV (VUV) were of the Al + MgF2 type produced in the late 1950s. Coatings of this design are still used today for multigas cavity...

Thin-Film Coatings: A Buyers' Guide
Trey Turner and Roger Kirschner, Research Electro-Optics Inc. (REO)

What are thin-film coatings? The purpose of any optical thin-film coating is to modify the transmittance and reflectance properties of the substrate material to which they are applied. Most coatings...

Optical Coatings: Improving Traditional Technology
Arthur T. Howe, CHROMATEL; Mervyn Davis, Nordiko Technical Services Ltd.; and David Pearson, Pearsonics Ltd.

The common polycrystalline materials used for optical thin-film materials do not satisfy the requirements of telecommunications because of the instabilities caused by moisture absorption in their...

Heat Control and Lighting Systems Design: Optical Coatings Separate Light from Heat
Eric Krisl, Deposition Sciences Inc.

Controlling and minimizing heat output is desirable in most lighting applications. For example, conventional incandescent light sources are very inefficient with only a small portion of the...

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