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QCL Primer: History, Characteristics, Applications Feb 18, 2016 — The versatility of quantum cascade lasers make them a good choice for the mid-infrared region. Since its first successful operation in 1960 at Hughes Research Labs, the laser has been at the center of innovation and research. Semiconductor lasers...
Integrating Spheres: Collecting and Uniformly Distributing Light Jan 1, 2015 — The integrating sphere is a simple, yet often misunderstood, device for measuring optical radiation. An integrating sphere’s function is to spatially integrate radiant flux (light). However, before one can optimize a sphere design for a...
Optical Delay Lines: Key to Time-Resolved Measurements Dec 8, 2014 — To obtain an accurate means of creating reliable delays in any time-resolved spectroscopy or dynamic experiment, several factors about the delay line stage must be considered to reduce or eliminate errors associated with linear stages. One of the...
Hyperspectral Imaging Spectroscopy: A Look at Real-Life Applications Mar 8, 2009 — Spectral imaging has grown from an expensive research-oriented technique to one that is applicable for a wide range of scientific and industrial applications. This article looks at real-life systems, the arrangement of the instrumentation and...
Spectroscopy: The Tools of the Trade Mar 8, 2009 — Understanding the whys and wherefores of a technology goes a long way toward solving your problem. Putting that knowledge to work requires an understanding of the tools of the trade and how to use them.
Tunable Lasers: Generating Wavelengths from the UV Through the IR Mar 8, 2009 — Many lasers allow the operator to tune or change the output wavelength from the UV to the IR on demand. Applications facilitated by tunable lasers can be divided into two basic categories. The first are situations where one or more discrete...
Adaptive Optics: Taming Atmospheric Turbulence Apr 13, 2006 — To Isaac Newton the problem was clear, and in 1704 he realized the effects of atmospheric turbulence on image formation. Just as heat waves shimmering above a hot patch of ground can distort our view, the image of a distant object formed by a...
Particle Image Velocimetry: Basics, Developments and Techniques Apr 13, 2006 — New tools and techniques such as single-oscillator, double-pulsed lasers expand the applications for particle image velocimetry, particularly in aircraft design. Particle image velocimetry (PIV) is an experimental tool in fluid mechanics and...
Spectroscopy: Mastering the Techniques Apr 13, 2006 — Spectrochemical analysis employing optical spectroscopic methods is used to monitor the water we drink, the food we eat, the status of human health and the quality of the environment. Such methods are also crucial to the development of safe and...
SWIR Imaging: An Industrial Processing Tool Apr 13, 2006 — Short-wave infrared (SWIR) imaging with InGaAs-based cameras is well suited to nondestructive identification of materials, their composition, coatings and other characteristics.
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