Quantum dots (QDs) are an efficient interface between matter and light and could potentially form the basis of quantum communications. However, their signal can be obstructed by structures that form by default during their manufacture. Researchers at the University of Basel, Ruhr-Universität Bochum, and Forschungszentrum Jülich have found a way to eliminate these interfering structures. The Bochum team at the Chair for Applied Solid State Physics realizes quantum dots in semiconductors. Courtesy of RUB, Kramer. The QDs manufactured in Bochum are generated in the...Read full articleRelated content from Photonics MediaARTICLESHybrid Process Integrates PIC with Artificial Atoms to Scale Up Quantum ChipMIT researchers have developed a way to manufacture and integrate artificial atoms with photonic circuitry to produce a quantum chip that could be used for large-scale quantum systems. Using a...Photonics Spectra September 2020 IssueLuminescent Manganese Complexes Show Promise for Sustainable DisplaysIn their quest to produce more-sustainable luminescent materials and catalysts for the conversion of sunlight into other forms of energy, University of Basel researchers have developed a class of...Photonics Spectra October 2021 IssueConventional Telecom Tech Relays Highly Precise Reference SignalsA Swiss research project has shown that high-precision reference signals can be sent via conventional telecommunications infrastructure. The project, part of the Swiss National Science...Photonics Spectra October 2021 IssueChromium Complex Emits Light in the Coveted NIR-II RangeA team of Swiss scientists has developed the first chromium complex that emits light in the NIR-II (1000 to 1700 nm) range. The scientists achieved an NIR-II luminescence of 1067 nm by strengthening...Photonics.com 8/17/2021PRODUCTSHyperspectral MicroscopeThe IMA hyperspectral microscope from Photon etc. Inc. has been announced by SphereOptics GmbH. The microscope delivers spectral and spatial information in the VIS, NIR, and SWIR wavelength...BioPhotonics Jul/Aug 2021 IssueUV DPSS LaserThe Duetto 349 single-frequency diode-pumped solid-state laser from UniKLasers Ltd. is a continuous-wave device that emits at 349 nm with a 50-mW output. The UV laser can be used across a wide...BioPhotonics May/Jun 2021 IssueDeep UV Diode Laser ModuleThe Model 261 deep UV diode laser module from UVC Photonics Corp. provides >10 mW of light at 261 nm. The laser package features a footprint of 20 × 20 × 80 mm, enabling easy...BioPhotonics May/Jun 2021 IssueOptoelectronic Probe CardThe UFO Probe™ Card from Jenoptik AG is designed for photonic integrated circuit (PIC) wafer-level testing on semiconductor chips. The novel optical solution for integration into...Photonics Spectra April 2021 IssuePHOTONICS HANDBOOK ARTICLESIndustrial Lasers: An Introduction to Process Qualification: The step from successfully demonstrating a new laser process on a limited number of samples under laboratory conditions, to scaling that process up for high-volume industrial use is a big one. In particular, it’s necessary to determine how variations in process parameters affect end results, so that acceptable process input and operating ranges can be determined.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...Photonics HandbookVibration Control: Limiting Mechanical Noise: Vibration control plays a critical role in research and industry. Mechanical noise, for example, can obscure high-resolution images and affect the quality of nanotechnology processes. Fortunately, vibration can be controlled through proper experimentation, process design, and the use of specialized equipment.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...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 HandbookFluorescence Lifetime Imaging: Choosing the Best Approach: Fluorescence lifetime imaging microscopy (FLIM), which measures the spatial distribution of the fluorescence decay, can be achieved either in the time or in the frequency domain. Each approach exhibits advantages and disadvantages, depending on the type of light detector and acquisition method employed.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...Photonics HandbookWHITEPAPERSLight Changes Matter – with Optics, Lasers and SensorsJenoptik is a global OEM supplier of solutions and products based on photonics technologies with more than 25 years experience in the fields of optics, laser technology, digital imaging,...Photonics.com 12/2/2020Characterizing 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 12/10/2021Focused on Possibility. What would you like to Achieve?What do you want to achieve? Sheaumann is dedicated to innovation, rigorous quality control, and assisting in the development of new technology. Looking for a US-based, vertically integrated partner...Photonics.com 9/25/2020Machine Vision Lens for Wafer, Food InspectionMyutron offers SWIR telecentric lenses suitable for wafer and food inspection. Available for SWIR image sensor 1”, InGaAs sensor Specially designed to transmit SWIR 700 ~ 2000 nm Able to capture...Photonics.com 11/4/2020WEBINARSCharacterization of Light Emitters and Detectors from the Visible to the Terahertz Spectral RangeThe development of a new generation of optical components that emit, modulate, and detect light across multiple spectral ranges requires accurate tools and techniques for the characterization of...Photonics.com 3/30/2021Freeform Optics for Imaging: Design MethodsPart 1 of the 2021 Freeform Optics Series The rise of freeform optics in imaging applications has led to optical systems with increased etendue, more compact volumes, and superior performance....Photonics.com 5/26/2021Applying TERS Toward the Development of Strain-Tunable Single-Photon SourcesThe native length scales of most optical and optoelectronic processes within low-dimensional quantum materials and next-generation devices are well below the diffraction limit of light. As a result,...Photonics.com 1/21/2021Silicon Photomultiplier: Theory and PracticeThe silicon photomultiplier (SiPM), also known as Multi-Pixel Photon Counter (MPPC), is becoming a popular choice of a photodetector in applications where even single photons must be detected. The...Photonics.com 1/11/2017PHOTONICS DICTIONARY TERMScovalent crystalA crystal formed by covalent bonds that are generally highly directional by nature. The electric characteristics of these crystals classify them as semiconductors.EDU.photonics.com 9/8/2009homojunctionA junction between semiconductors that differ in their doping level conductivities but not in their atomic or alloy compositions.EDU.photonics.com 9/8/2009quantum dotsAlso known as QDs. Nanocrystals of semiconductor materials that fluoresce when excited by external light sources, primarily in narrow visible and near-infrared regions; they are commonly used as...EDU.photonics.com 6/30/2017carrier injectionThe process whereby light is emitted at the junction of N- and P-type semiconductors when an external electric source is applied to drive the electrons and the holes into the junction.EDU.photonics.com 9/8/2009MEDIACrystal Light - LIGHT MATTERS 08.12.2015A new generation of quantum dot light emitters aims to outshine the rest. See where lighting and display technology might be headed – this week on Light Matters!Photonics.com 8/12/2015Spectroscopy Optics - LIGHT MATTERS 03.13.2013-Laser Cancer Test -IR Polution Detector -GRIN Wins On today’s show, spectroscopy could lead to better optical devices, a laser test for breast cancer readies for human trials, an IR camera detects...Photonics.com 3/13/2013PIC Fundamentals, Design at Heart of AIM Photonics Summer AcademyStudents from large and small size companies and bigger Department of Defense affiliates of the AIM Photonics Institute took part in the recent AIM Photonics Summer Academy at MIT. This was the third...Photonics.com 7/30/2018Photonics 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 2/21/2018PHOTONICS BUYERS' GUIDE CATEGORIESMicrolens ArraysPicosecond DetectorsPhoton CountersA photon counter is a device used to evaluate the luminance of a surface by determining the number of photons emitted from a sample surface area.PublicationsCOMPANIESPhotonics MediaPhotonics Media is the publisher of Photonics Spectra, BioPhotonics, and Vision Spectra magazines in print, digital and mobile app formats; the Photonics Marketplace featuring the Photonics Buyers'...Photonics Buyers' GuideSPIEPhotonics Buyers' Guide