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21 articles
Photonics Handbook
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What Is Photonics?
Photonics Media Editors
Photonics is the study of light and other types of radiant energy whose quantum unit is the photon. The impact of photonics on research, technology, navigation, culture, astronomy, forensics, and...
Measuring Aspheres: Selecting the Best Technique
Amy Frantz, Edmund Optics Inc.
The benefits of aspheric lenses are numerous: They allow for a reduction in spherical aberrations and are ideal for focusing or collimating light, as they can achieve a low ƒ-number. Aspheres...
Machine Vision Cameras: Making the Right Selection
GLEN AHEARN, TELEDYNE DALSA
Technological advances have resulted in new, higher-quality sensors that enable machine vision cameras to deliver greater features and functionality at a lower cost than ever before. These factors...
Industrial Lasers: An Introduction to Process Qualification
JOCHEN DEILE AND FRANK GAEBLER, COHERENT INC.
Materials processing with lasers is actually a broad term for a diverse range of applications. The major categories of these uses, and the lasers that service them, are summarized Table 1. At one...
Fluorescence Lifetime Imaging: Choosing the Best Approach
GERHARD HOLST, Excelitas PCO GmbH
The term fluorescence is often applied as a synonym for photoluminescence, although luminescence actually covers fluorescence and phosphorescence. Both of these terms describe the process of...
Nanopositioning: A Step Ahead
Scott Jordan, Brian Lula, and Stefan Vorndran, PI (Physik Instrumente) LP
By its original definition, a nanopositioning device is a mechanism capable of repeatedly delivering motion in increments as small as one nanometer. Lately demands from industry and research have...
Understanding Surface Quality: A Practical Guide
John C. Smith, Rocky Mountain Instrument Co. (RMI)
Surface quality has become one of the most poorly understood specifications in the optics industry. A significant portion of the confusion stems from the two major competing (and largely...
Integrating Spheres: Collecting and Uniformly Distributing Light
Greg McKee, Labsphere Inc.
An integrating sphere’s function is to spatially integrate radiant flux (light). However, before one can optimize a sphere design for a particular application, it is important to understand how...
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’...
Interferometry: Measuring with Light
Zygo Corporation
An interferometer is an instrument that compares the position or surface structure of two objects. The basic two-beam division of amplitude interferometer components consists of a light source, a...
Beryllium Mirrors: Refinements Enable New Applications
Vladimir Vudler and Peter Richard, Hardric Laboratories, Inc.
With a specific gravity of 1.85 g/cm3, beryllium is the lightest metal that is workable. It is 45 percent lighter than aluminum and approximately five times as stiff. Its stiffness to weight ratio...
Hyperspectral Imaging Spectroscopy: A Look at Real-Life Applications
Dr. John R. Gilchrist, Clyde HSI; Timo Hyvärinen, Spectral Imaging Ltd.
Hyperspectral imaging spectroscopy has developed dramatically from a large, complex, remote-sensing satellite- or aircraft-based system into a rugged, compact, economically priced imaging and...
Laser Diodes: Specification Guidelines
Intense Ltd.
While some design engineers know exactly what they need from their laser diode, others may choose a partner to navigate what can be a complex development process. Laser diode manufacturers know which...
Adhesives for Fiber Optics Assembly: Making the Right Choice
Edward A.Y. Fisher, Henkel Corp.
Adhesives for fiber optic components that perform well on glass, metal, ceramic and most plastic substrates provide excellent chemical and solvent resistance. They also can act as an electrical...
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...
Photonics Packaging: Optical Communication Components
Torsten Wipiejewski, VNT Management Oy, German Office
Photonic components are key elements for the information technology (IT). Photonics technology covers the generation of information (cameras, sensors), its transportation (optical communication),...
High-Speed Video: Selecting a Slow-Motion Imaging System
Andrew Bridges, Photron USA, Inc.
There is a growing market for imaging systems that provides an immediate, slow-motion view of a process that allows one to see events that happen too quickly for the human eye to perceive or...
Imaging Colorimetry: Accuracy in Display and Light Source Metrology
Ron Rykowski and Hubert Kostal, Radiant Imaging, Inc.
The market for flat panel displays (FPDs) has undergone tremendous growth, driven mostly by increased demand for televisions, cell phones, computers, digital cameras and MP3 players. Similarly,...
Dynamic Interferometry: Getting Rid of the Jitters
John Hayes and James Millerd, 4D Technology Corporation
Conditions on the factory floor and in industrial cleanrooms with high-capacity air filtration systems can hamper the use of interferometry. Another problem is the testing of large-aperture mirrors...
Nano-Optics: New Rules for Optical Components
Hubert Kostal, NanoOpto Corp.
When physical structures get very small — on the order of molecular or atomic sizes with one or more dimensions on the nanoscale — their behavior and interactions with energy, including...
Photonics Handbook
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