Using a two-color time-resolved Faraday rotation measurement technique, researchers at the University of California, Santa Barbara, have observed the transfer of electron spin information between molecularly linked CdSe quantum dots at room temperature. The work, which they reported July 31 online on Sciencexpress, suggests that such structures may be suitable for the fabrication of spintronic devices for applications such as quantum information processing. To produce the quantum-dot assemblies, Min Ouyang and David D. Awschalom immersed functionalized fused silica substrates in a solution...Read full articleRelated content from Photonics MediaArticlesSPIE Elects de Groot into its Presidential ChainPeter de Groot, chief scientist at Zygo Corp., was elected to serve as the 2023 vice president of SPIE. The election brings de Groot into the SPIE presidential chain. He will serve as president-elect...BioPhotonics Nov/Dec 2022 IssueIntegrated Photonic Quantum Sensing Takes Aim at Climate ResearchA NASA-funded collaboration will focus on advancing quantum sensing technology to enable new understanding of Earth and the effects of climate change. Led by the University of Texas at Austin (UT),...Photonics.com 3/28/2023Diffractive Optical Network Enables Snapshot Multispectral ImagingUCLA researchers led by Aydogan Ozcan and Mona Jarrahi have developed a multispectral imaging technology capable of turning a monochrome sensor into a multispectral one. Rather than the traditional...Photonics Spectra June 2023 IssueSpectroscopy Breakthrough May Rewrite Nature’s ConstantsResearchers have long dreamed of the secrets they could unlock by raising the energy state of an atom’s nucleus using a laser. Accomplishing this would allow the atomic clocks of today to be...Photonics.com 7/8/2024ProductsQuantum Dot SWIR SensorThe Q.Eye® SWIR from Quantum Solutions is a quantum dot based SWIR image sensor for applications such as industrial machine vision, drones, robotics, ADAS systems, and surveillance. With a broad...Photonics Spectra July 2024 IssueWebinarsHow to Choose or Custom-Design the Right Machine Vision Lens for Your ApplicationAlthough commonly overlooked, a lens is the first component in the composition of a vision system. Using a low-quality lens will result in poor image quality, even if the lens is paired with hardware...Photonics.com 7/21/2021Biophotonic Imaging for Medicine: A Digital ConferenceResearchers from around the world presented their latest work at “Biophotonic Imaging for Medicine: A Digital Conference.” Presentations focused on a range of light-based imaging and...Photonics.com 6/11/2015Computational Imaging: Using Hardware and Software Together to Design High-Resolution, Light-Efficient Imaging SystemsThis webinar will discuss computational imaging – a new generation of cameras that integrates computers as part of an imaging system – where optical imaging systems and image processing...Photonics.com 10/16/2018Laser-Based Machine Vision: Lidar and 3-D ScanningLaser scanning technology has been around for several decades but with little innovative technology advancement. A new scanning technology platform based on a state-of-the-art MEMS projection engine,...Photonics.com 2/25/2015Photonics Dictionary Termsoptical diodeSee Faraday rotation; optoisolator.Photonics Dictionarymagneto-optic shutterA type of high-speed photographic shutter that uses Faraday rotation to produce exposure times as fast as 1 microsecond. It consists of two polarizers, set with their planes of polarization at right...Photonics Dictionarybulk nonreciprocal deviceA device that functions throughout the continuous radiation of a linearly polarized plane wave, and whose nonreciprocity arises from the Faraday rotation of linearly polarized radiation.Photonics DictionaryelectromagnonAn electromagnon is a quasiparticle excitation that combines aspects of both magnetism and electric polarization in a crystal lattice. Specifically, it refers to a collective excitation of spins and...Photonics DictionaryMediaFaraday RotationVideo definition of Faraday Rotation presented by Eric Zhang, Princeton University.Photonics.com 11/14/2014Connie Chang-Hasnain, University of California, BerkeleyConnie Chang-Hasnain, OSA Fellow, University of California, Berkeley, USA, muses over the simplistic beauty of optics and how it inspired her work in semiconductor lasers.Photonics.com 6/15/2016Sneak Preview: Photonics West: The Most Wonderful Time of the [Industry’s] YearThree conferences and two exhibitions make SPIE Photonics West the world’s largest annual event in the industry. From plenary presentations to networking opportunities, this show offers an expansive,...Photonics.com 1/5/2017Mobile 3-D, Spin Hall Effect & EMCCD - LIGHT MATTERS 03.27.2013-Mobile 3-D -Spin Hall Effect -EMCCD On this week’s show, glasses-free 3-D goes mobile, the strongest signal yet of the photonic spin Hall effect is obtained by a metamaterial, new theory suggests an...Photonics.com 3/27/2013Photonics Buyers' Guide CategoriesQuantum DotsA quantum dot is a nanoscale semiconductor structure, typically composed of materials like cadmium selenide or indium arsenide, that exhibits unique quantum mechanical properties. These properties...CompaniesEdinburgh Instruments Ltd.Founded in 1971, Edinburgh Instruments Ltd. is a global provider of sophisticated, state-of-the-art analytical instrumentation for optical spectroscopy. We design and manufacture a range of...Photonics Buyers' Guide