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Photonics Handbook
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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...
Vibration Control: Limiting Mechanical Noise
MKS/Newport
In general, there are three common approaches to reducing mechanical excitation of photonic systems. The first is identifying the sources of vibration and implementing ways to eliminate or reduce...
Common Infrared Optical Materials and Coatings: A Guide to Properties, Performance, and Applications
Jeffrey L. Tosi and Kumar M. Khajurivala, Janos Technology LLC
The optical materials selected for an optical system depend upon the application, the required system performance and the environment in which the system is to perform; thus the materials’...
Ultraviolet Filters: Past and Present
Sarah Locknar, PhD, Omega Optical LLC, an Omega Optical Holdings company
In their earliest forms, UV bandpass filters that were optimized for wavelengths less than 400 nm, such as the Schott UG or the Hoya U-series, were constructed of absorbing compounds in glass. Such...
Diode-Pumped Lasers: Performance, Reliability Enhance Applications
Arnd Krueger and Scott White, MKS/Spectra-Physics
Neodymium-doped crystals and glasses such as Nd:YAG (neodymium:yttrium aluminum garnet) have long been used as laser gain materials. Optically pumped, they produce an output wavelength close to 1...
Mirrors: Coating Choice Makes a Difference
JDSU
The basic difference between the household mirror and the optical mirror is that one is coated on the back surface and the other is coated on the front. For optical applications, a front-surface...
Connectors and Splices: Correct Alignment Spells Success
Paula Trindell, Tyco Electronics
Just as an electronic connector provides a pluggable connection between electronic circuits, a fiber optic connector provides an optical one. The goal is joining a fiber to a transmitter, receiver or...
Broadband Spectrophotometry: A Fast, Simple, Accurate Tool
Iris Bloomer, n&k Technology, Inc.; Rebecca Mirsky, Al Shugart International
Designing devices that incorporate ultrathin films is an important means of enhancing yields. However, characterizing ultrathin films provides a challenge for mainstream metrology tools such as...
Nd:YAG Lasers: Standing the Test of Time
Quantel USA
The ubiquitous Nd:YAG laser has played many roles over the years. For the military, it has provided rangefinding and target designation capabilities. When used with nonlinear optics or as a pump...
Beamsplitters: A Guide for Designers
CVI Melles Griot
Plate beamsplitters Plate beamsplitters consist of a thin plate of optical crown glass with a different type of coating deposited on each side. The first surface is coated with an all-dielectric...
Optical Components: Finding Your Way Through the Maze
CVI Melles Griot
Lenses come in a variety of shapes, sizes and materials. They can be made of a single piece of glass or have multiple elements; their surfaces can be spherical, aspheric or cylindrical; they can be...
Polarization in Fiber Systems: Squeezing out More Bandwidth
Steve Yao, General Photonics Corp.
As bit rates increase to meet expanding demand, systems have become increasingly sensitive to polarization-related impairments. These include polarization mode dispersion (PMD) in optical fibers,...
Photonics Handbook
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