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18 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...
Silicon Photonics: Light Is the Ultimate Medium for High-Speed Communications
Christophe Kopp, Ségolène Olivier, and Stéphane Bernabé, CEA-LETI
Silicon photonics is widely considered a key enabling technology for further development of optical interconnect solutions needed to address growing traffic on the internet. From the first submarine...
QCL Primer: History, Characteristics, Applications
Hamamatsu Corporation
Since its first successful operation in 1960 at Hughes Research Labs, the laser technology has been at the center of innovation and research. Semiconductor lasers first made their appearance in 1962...
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...
Measuring Small-Beam MFD: Overcoming the Challenges
DERRICK PETERMAN, PhD, MKS Ophir
Profiling beams under 10 µm in size is one of the more challenging beam profiling applications. There are numerous reasons for this, including the very small size. Focal plane arrays commonly...
Laser Measurement Systems: Best Practices
JOHN MCCAULEY, MKS Ophir
Given the pace at which technology advances, there always seems to be a learning curve. With the abundance of consumer electronics available, there typically is no right or wrong way to use these...
Laser Operation: Temperature Control and Mount Selection
Paul Corr and Patrick Klima, Arroyo Instruments LLC
As you operate your laser, only a portion of the electrical power sourced from your laser driver converts to light energy. The remainder turns to heat, and the buildup of that thermal energy presents...
Passive Athermalization: Maintaining Optical Performance Over Temperature
Janos Engineering, Janos Technology LLC
For rotationally symmetric optical systems, either the lens or the detector moves along the optical axis to maintain optical performance. If the compensating axial motion is accomplished without the...
Infrared Spectral Selection: It Begins with the Detector
Austin Richards, FLIR Systems, Commercial Vision Systems
Spectral selection is a powerful tool that enhances conventional imaging tremendously. Most imaging systems, including the human eye, are designed to image light over a broad range of the spectrum....
Spectroscopy: The Tools of the Trade
Dr. John R. Gilchrist, Clyde HSI
All optical spectrometry techniques rely on the measurement of radiant power. The configuration of the instrument varies based on the measurement technique: absorption, emission, luminescence, or...
Photonic Component Manufacturing: Moving Toward Automation
Bruce W. Hueners and Michael K. Formica, Palomar Technologies
Manufacturing the laser diode is complicated by the existence of multiple proprietary techniques and intellectual property barriers together with complex device physics and unique materials. ...
Image Intensification: The Technology of Night Vision
Harry P. Montoro, ITT Night Vision
Image intensification, the basis of night vision, is a complex conversion of energy particles that occurs within a vacuum tube. An image-intensifier system works by collecting photons through an...
Infrared System Design: Understanding the Process
William L. Wolfe, Professor Emeritus, University of Arizona, Optical Sciences Center
Infrared system design is not, like some circuit design, a synthetic process. One cannot start by stating the problem and proceeding in an orderly fashion to a final solution. Rather, we guess a...
Radiation Tolerances: Effects on CID Imaging Devices
Tony Chapman, Thermo Fisher Scientific, CIDTEC Cameras & Imagers
Like other CTDs, the CID imager uses hundreds of thousands (up to 4 million) pixel elements to capture optical images, and converts the light into an electronic charge which may be displayed on a...
Driving Diode Lasers: A Straightforward Procedure
Uwe Malzahn, iC-Haus GmbH
By observing a few simple rules that govern diode lasers’ properties, driving them loses much of its mystery. Below its threshold current, a diode laser emits LED light with spontaneous...
Particle Image Velocimetry: Basics, Developments and Techniques
M. Kelnberger, InnoLas GmbH; G. Schwitzgebel, Universität Mainz
Particle image velocimetry (PIV) is an experimental tool in fluid mechanics and aerodynamics. The basic principle involves photographic recording of the motion of microscopic particles that follow...
SWIR Imaging: An Industrial Processing Tool
Sensors Unlimited Inc., A Collins Aerospace company
Imaging has long been used in industrial processes to measure, monitor, control, or otherwise manage the production of goods. The challenge to the process designer is to develop a tool that captures...
Semiconductor Lasers: An Overview of Commercial Devices
JDSU
Laser diodes vary widely in their wavelengths, powers, spectra and beam quality. Yet they share two fundamental components with all other lasers: an optical amplifier and a resonator that confines...
Photonics Handbook
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