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...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 9/27/2019Physicists Develop New Method to Verify Photon EntanglementA team of researchers from the University of Vienna and the Austrian Academy of Sciences (ÖAW) has introduced a novel technique to detect entanglement even in large-scale quantum systems. ...Photonics.com 7/15/2019Prototype Could be Used to Connect Quantum ComputersPhysicists from the Institute of Science and Technology Austria (IST Austria) used a mechanical oscillator to produce entangled radiation. According to the research team, this is the first time a...Photonics Spectra September 2019 IssuePRODUCTSLidarThe Cube Range lidar from Blickfeld GmbH is a microelectromechanical (MEMS) device that detects obstacles at a distance of up to 250 m. The Cube Range was designed as a robust 3D solid-state...EuroPhotonics Winter 2019 IssueMWIR CameraThe Tigris-640 MWIR camera from Xenics NV is designed for applications where high-speed, high-thermal-sensitivity, onboard thermography or broadband detectors are required. The Tigris-640 is...Photonics.com 9/12/2018Ultrastable LaserThe ORS-Cubic Ultrastable Laser from Menlo Systems GmbH is a compact device based on the rigidly mounted 5-cm cubic cavity developed in cooperation with the National Physical Laboratory with low...EuroPhotonics Summer 2019 IssueSWIR HDR CameraThe SWIR HDR Camera from Photonic Science and Engineering Ltd. features in-camera corrections and a high dynamic range (HDR) mode. Providing 640 × 512 pixels with a 15-µm pitch...Photonics.com 10/28/2019PHOTONICS HANDBOOK ARTICLESVibration 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 HandbookNSOM: Discovering New Worlds: Near-field scanning optical microscopy (NSOM) is an optical microscopy technique capable of imaging objects with a resolution below the diffraction limit of conventional (far-field) microscopy; i.e., below approximately half the wavelength of the light used.NSOM is suitable for studies on the mesoscopic scale (several tens to hundreds of molecular dimensions). It has become an important tool in research and applications of semiconductors, organic layers...Photonics HandbookPhotomultipliers: 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 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 360 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 11/13/2019Photophysical Characterisation of Perovskite Quantum DotsPerovskite Quantum Dots are a promising new class of light emitters. In this paper a complete photophysical characterisation, comprising of absorption spectra, photoluminescence spectra,...Photonics.com 1/1/2019Kinetics 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 11/1/2019Diode Lasers Enable Diverse Therapeutic ApplicationsDiode lasers have become the dominant laser type used in therapeutic applications. This is because these workhorse devices provide lower cost of ownership, a wider choice of output wavelength and...Photonics.com 10/29/2018WEBINARSSmart 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 3/13/2018Silicon 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 1/11/2017From 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 7/30/2014Solving Challenges in Defect Inspection of Advanced OpticsOptical components such as lenses, mirrors, prisms, and windows undergo tight quality control to deliver optimal optical transfer function. Any scratch, dig, chip pinhole, or other defect will...Photonics.com 9/23/2019PHOTONICS 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 9/8/2009solid-state imaging systemAn imaging system that uses a mosaic of tiny light-sensitive semiconductors (phototransistors) to produce individual outputs that are then converted into a coherent video signal.EDU.photonics.com 9/8/2009excess noise factorA factor, F, indicating the increase in shot noise in an avalanche photodiode as compared with the ideal multiplier, which is noiseless. The noise, which results from variations in avalanche gains,...EDU.photonics.com 9/8/2009semiconductor (SC)A material whose ability to conduct electricity falls between that of conductors and insulators. The conductivity of semiconductors can be controlled by adding specific amounts of impurities in a...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 8/12/2015Photonics 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 3/13/2013PIC 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 BUYERS' GUIDE CATEGORIESMicrolens ArraysPhoton 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.Picosecond DetectorsGermanium CrystalsCOMPANIESKentek Corp.Laser safety eyewear, barriers & signs, laser components, laser replacement parts, laser accessories, medical laser safety eye protection - find these LaserSmart® products and more in the...Photonics Buyers' GuideSPIE, 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 Buyers' Guide print, online...Photonics Buyers' GuideInnolume GmbHInnolume has a complete integrated solution for fabrication of a broad assortment of GaAs-based optoelectronic devices in the wavelength range of 780 to 1330 nm. Two production scale MBE...Photonics Buyers' Guide