A new type of computing, developed by researchers at McMaster University, uses a single-component, light-responsive system to perform computing operations without relying on external electrical power or processors. The computing operation is performed by shining patterned bands of light and shadow through different facets of a photopolymer cube and reading the results that emerge. A researcher shines layered stripes of light through the top and sides of a glass case holding the polymer, which is roughly the size of a dice used in a board game. McMaster researcher Fariha Mahmood...Read full articleRelated content from Photonics MediaARTICLESFluorescent Sensors with Noncanonical Amino Acids Could Broaden Sensor Use in Biological StudiesAlthough fluorescence tools for biological study abound, some processes, such as the interactions between proteins and metabolites, are challenging to investigate with the tools that currently exist....Photonics.com 10/21/20212D Microlaser Arrays Enhance Stability, PowerResearchers from the University of Pennsylvania and Duke University designed and built 2D arrays of closely packed microlasers that demonstrated the stability of a single microlaser, and that...Photonics Spectra July 2021 IssueLiquid Crystal-Based Devices Manipulate Light with Flat Optics to Uncover Hidden ImagesAn ancient optical illusion has been updated using the flat optics of today to create a device that reveals a hidden image when light is shined on it. Developed at the University of Ottawa, the magic...Photonics.com 5/13/2022Laser Process Prints Defect-free Custom Alloy PartsA study from a Texas A&M University research team could make it easier to print uniform, defect-free parts using the laser bed powder fusion 3D-printing technique with metal alloys. The...Photonics Spectra December 2021 IssuePRODUCTSBeam SamplerThe BA32-1KW beam sampler from Gentec Electro-Optics Inc. is designed for kW-level lasers. Allowing camera-based beam profiling for high-power lasers, the water-cooled device can be used for...Photonics Spectra August 2022 IssueOptical Inspection SystemThe Photon Optical Inspection System from LMI Technologies Inc. provides fast, high-precision scanning of manufactured materials. The system leverages line confocal and laser profiler sensor...Photonics Spectra March 2023 IssueSilicon Photodiode DetectorsMarktech Optoelectronics Inc.’s lineup of advanced silicon photodiode detectors consists of several detector series based on spectral sensitivity. The Series 8 General Purpose devices...Photonics Spectra July 2022 IssueMetal Optic Thin-Film CoatingThin-film coatings on freeform metal optics from AccuCoat Inc. allows for a reduction in nonrecurring engineering tooling charges and shortened lead times. From custom design to prototype, the...Photonics.com 6/17/2021PHOTONICS HANDBOOK ARTICLESAspheric Lenses: Design Considerations: This first of two articles will cover design and manufacturing options for aspheres; the second will include more detail on manufacturing and testing processes. These articles will provide the tools optics designers need to tailor their designs to the appropriate manufacturing process and to optimize the cost of component fabrication.Aspheric surfaces are powerful tools that combine the optical corrections of multiple lenses into a single element (Figure 1) and affect performance in ways that spherical optics cannot. For example,...Photonics HandbookOptical Delay Lines: Key to Time-Resolved Measurements: 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 most critical elements of any time-resolved spectroscopy and dynamics experiment is the optical delay line. A typical optical delay line consists of a retroreflector or folding mirrors on...Photonics HandbookOptical Materials: Double-Sided Lapping and Polishing: Double-sided lapping and polishing utilizes planetary action with the combination of a top and bottom plate to precisely grind and polish precision, parallel optics.Double-sided processing is a batch-type process that uses planetary action — generally with loose, abrasive particles suspended in a liquid vehicle — to abrade material almost equally...Photonics HandbookLaser Safety: Important Considerations: Laser safety is nothing to scoff at; lasers can be hazardous. Enter Class 1 laser products — lasers that are so safe that the user doesn’t require specific laser safety training or protective eyewear. Some precautions still exist, though.When purchasing an industrial laser system, the astute buyer will look for a Class 1 laser product — a system where the laser beam hazard is completely enclosed and there is no potential laser...Photonics HandbookWHITEPAPERSSurface Characterization of Tribological Coatings: Wear Properties, Thickness and RoughnessWith the S mart 3D profilometer, it is possible to more precisely measure the volume loss of the wear tracks after the friction and wear tests, since it measures the real shape of the wear track....Photonics.com 12/10/2021Characterizing the temperature-induced evolution of the shape and texture of a silicon waferUsing Linkam’s precision temperature control chamber with Sensofar’s Linnik objective lens eliminates these problems and allows accurate measurement of 3D topographic profiles of nanoscale materials....Photonics.com 12/10/2021Characterization of Dry Electrolyte Polishing ProcessThe preservation of the form is demonstrated by complementary form measurements using Ai Focus Variation technique. S neox Five Axis is a versatile metrology tool that perfectly suits our measurement...Photonics.com 12/10/2021Analysis of Metallic Impurities in Si Wafers Using Fully Automated VPD-ICP-MSThis work demonstrates the coupling of an IAS Expert_PS VPD (vapor phase decomposition) system with the Perkinelmer NexION 5000 ICP-MS, delivering a fully automated, reliable solution for the...Photonics.com 6/8/2021WEBINARSDevelopments in Optics and Optical ComponentsFree Webinar Additional Questions & Answers from the Webinar below: Speakers: Dr. Robert R. McLeod Associate Professor and Graduate Director Electrical, Computer and Energy...Photonics.com 5/29/2013European Photonics Manufacturing Services Funded by ECThis event is supported by the European initiatives presented and is moderated by EPIC, the European Photonics Industry Consortium. The European Commission is helping companies access the...Photonics.com 6/30/2021New Directions in Microscopy IlluminationBelow is Michael Walsh's presentation - Join us for a FREE webinar: Wednesday, Aug. 13, 2014, 1 p.m. EDT New Directions in Microscopy Illumination In optical microscopy, light is...Photonics.com 8/13/2014Avalanche Photodiodes – Design and ApplicationsThe high-gain properties in avalanche photodiodes (APDs) make these devices an ideal choice for low-light-level detection in optical communications, spectroscopy, range finding and many other...Photonics.com 9/29/2020PHOTONICS DICTIONARY TERMSphotopolymerizationA process in which a mixture of one or more monomers, plus a catalyst, polymerize under exposure to light radiation. Photopolymerization permits a hologram to be exposed, fixed and reconstructed in...EDU.photonics.com 9/8/2009photopolymer hologramA holographic plate coated by photopolymeric mixtures that are composed of one or more monomers and a photoredox catalyst sensitized to visible light. The material becomes a plastic solid when...EDU.photonics.com 9/8/2009photopolymerA polymer produced as a result of photochemical processes.EDU.photonics.com 9/8/2009coated opticsOptical elements that have been coated with one or more layers of dielectric, or metallic material. These coatings serve to reduce or increase reflection from the surface, and to protect the surfaces...EDU.photonics.com 3/5/2018MEDIALight Matters Extra: Weird and Strange: Quantum Photonics - 03.2018In this month's Light Matters Extra, we take you to the Quantum Photonics Laboratory at MIT run by Dr. Dirk Englund. Dr. Englund's group, the Quantum Photonics Group, is made up of postdocs and...Photonics.com 3/29/2018Supporting the Photonics Industry from the Laboratory - LIGHT MATTERS 01.2018On this month's episode of Light Matters, we take you to central Massachusetts as Worcester Polytechnic Institute and Quinsigamond Community College take on a comprehensive joint photonics laboratory...Photonics.com 1/18/2018Photonics on the Showroom Floor and in the Lab - LIGHT MATTERS 02.2018On this month's episode of Light Matters, we take you on a brief tour of the Higgins Laboratories at Worcester Polytechnic Institute (WPI). Quinsigamond Community College and WPI received a $4M grant...Photonics.com 2/21/2018Fundamentally Different Photonics - LIGHT MATTERS 03.2018On this month's episode of Light Matters, we take you to the South by Southwest (SXSW) Trade Show in Austin, Texas, as new photonics innovations hit the show floor of the Austin Convention Center....Photonics.com 3/29/2018PHOTONICS BUYERS' GUIDE CATEGORIESEducational MaterialsDiamond CrystalsLint-Free Lens TissueCoating Testing and Monitoring EquipmentCOMPANIESOhara Corporation, Western OfficeOhara manufactures precision optical glasses: strip/slab, cut/molded blanks, pressings, high homogeneity blanks, fine gobs, polished ball lenses, near-UV transmitting i-Line glass, ceramic...Photonics Buyers' GuideGlass Fab Inc.A History of Quality Since 1974 Glass Fab Inc. has met customers' stringent specifications by providing fabricated parts made of optical glass, filter glass, fused quartz and fused silica, low...Photonics Buyers' GuideLambda Research Optics Inc. (USA)Lambda Research Optics, Inc. is a leading manufacturer of laser optics with high power thin-film coatings and high precision fabrications. Lambda serves a wide range of industries, such as Biotech,...Photonics Buyers' GuideGAMDAN Optics Inc.Photonics Buyers' Guide