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 MediaARTICLESSpin Lasers Could Transfer Data Faster, Use Less Energy than Conventional LasersCurrently, rapid data transfer via optical fiber is accomplished by transmitting light signals that code data by modulating the light intensity. Due to physical limitations, data transfer that is...Photonics Spectra June 2019 IssueMachine Learning Helps Tune, Characterize Quantum Dots QuicklyUsing a machine-learning approach, scientists from the Universities of Oxford, Basel, and Lancaster are automating the process of characterizing and tuning individual semiconductor quantum dots (QDs)...Photonics.com 9/27/2019RUB Scientists Show Radiative Auger Process in Quantum DotsScientists at Ruhr-University Bochum, working with researchers based in Basel and Copenhagen, have demonstrated the connection between the radiative Auger process and quantum optics. The scientists...EuroPhotonics Autumn 2020 IssueCopper-Based Material Could Lead to Inexpensive, High-Yield OLEDsAt the Paul Scherrer Institute (PSI), researchers have discovered a green luminescent substance that could enable OLEDs to deliver high light yields inexpensively and on a large scale. Many of...Photonics Spectra July 2020 IssuePRODUCTSMechatronic Calotte LoaderThe mWL.cs mechatronic calotte loader from mechatronic systemtechnik GmbH is an automated, standalone system for transferring wafers between cassettes and calottes. The mWL.cs provides...Photonics.com 2/11/2021Pyroelectric SensorsThe ezPyro™ SMD+ series of pyroelectric sensors from Pyreos provides fast and accurate detection in a small, low-cost, integrated subsystem to a wider range of anesthetic, refrigerant, and...EuroPhotonics Spring 2021 IssueSWIR CameraThe HiPe SenS 640V-ST SWIR Camera from New Imaging Technologies SA features the NSC1902T-SI sensor with low-noise operation and ultra-low dark current. The camera is dedicated to low-light...BioPhotonics Sep/Oct 2020 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.com 12/30/2020PHOTONICS HANDBOOK ARTICLESPhotomultipliers: Low-Light, High-Speed Specialists: Rapid detection of light calls for a sensitive detector and electronics that do not introduce additional signal noise. In fact, for very rapid detection, detector shot noise does not determine the signal-to-noise ratio. Instead, the amplifier has the most impact, which is why many designers have selected a photomultiplier tube for the high-speed or low-light-level detection of photons.The applications where rapid detection of light is a must are many. They include a wide variety: semiconductor inspection, gene sequencing, oil well logging and high-energy physics. The reasons for...Photonics HandbookSilicon Photonics: Light Is the Ultimate Medium for High-Speed Communications: Thanks to innovations with heterogeneous material integration and multiphotonic layer stacking, silicon photonics will drive optical solutions to high volumes and low costs.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...Photonics HandbookIndustrial 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 HandbookLight-Emitting Diodes: A Primer: Light-emitting diodes (LEDs) are semiconductors that convert electrical energy into light energy. The color of the emitted light depends on the semiconductor material and composition, with LEDs generally classified into three wavelengths: ultraviolet, visible, and infrared.The wavelength range of commercially available LEDs with single-element output power of at least 5 mW is 275 to 950 nm. Each wavelength range is made from a specific semiconductor material family,...Photonics HandbookWHITEPAPERSMulti-line Lasers Simplify Biomedical ImagingThe introduction of multi-line lasers to fluorescence instrumentation provides a compact, easy-to-use, and service-free solution for integrating up to four laser wavelengths with reliable, stable...Photonics.com 11/13/2019Kinetics of Photocatalysis Reactions Studied by Transient Absorption SpectroscopyPhotocatalysis is the rate increase of a chemical reaction by light, often in the presence of a catalyst that starts the reaction upon irradiation. Photocatalysts are typically semiconducting metal...Photonics.com 11/1/2019Light 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 12/2/2020WEBINARSCharacterization 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 3/30/2021Applying 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 1/21/2021Smart Cameras: Technology and ApplicationsOver the past few years the capabilities of smart cameras have increased dramatically. Available image resolution has increased from 5 megapixels maximum to 21 megapixels. Processing power has...Photonics.com 3/13/2018From Product to Profit: The Powerful Impact of Early-stage, User-Based ResearchAdditional Q&A - Q: How can I distribute my questionnaire? If I am in the early stage of designing a specific product for India and I know my target audience... How can I reach them? Do you...Photonics.com 7/30/2014PHOTONICS DICTIONARY TERMSquantum 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 6/30/2017stibine gasThe purest gas source of antimony, which is used in the manufacture of compound semiconductors for IR sensors and solid-state lasers.EDU.photonics.com 9/8/2009covalent 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 9/8/2009quantum opticsThe area of optics in which quantum theory is used to describe light in discrete units or "quanta" of energy known as photons. First observed by Albert Einstein's photoelectric effect, this particle...EDU.photonics.com 3/5/2018MEDIACrystal 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 8/12/2015PIC 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 2/21/2018Spectroscopy 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 3/13/2013PHOTONICS 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.Display Test EquipmentCOMPANIESSPIE, The International Society for Optics and PhotonicsPhotonics Buyers' GuidePhotonics MediaPhotonics Media is the publisher of Photonics Spectra, BioPhotonics, EuroPhotonics, and Vision Spectra magazines in print, digital and mobile app formats; the Photonics Marketplace featuring the...Photonics Buyers' Guide