OKI Develops Ultracompact Photonic Integrated Circuit Chip Using Silicon Photonics Technology to Realize Various Optical Sensors  Business Wire

BMA International and its technology partner, Technowave International LLC, determined that the HID DigitalPersona 4500 Fingerprint Reader met all their requirements.

The system identifies and removes undesirable product defects and foreign material such as shells, shell fragments, rocks and wood sticks.

COMPASS is designed to identify and remove foreign material and product defects to protect food safety and final product quality.

The effect of boron in BxGa1−xN/SiC heteroepitaxy was established by X-ray diffraction reciprocal-space maps on symmetric 0002 and asymmetric 11 {overline 2} 4 reflections. The density of screw and edge threading dislocations was quantified in the framework of the mosaic model.

BGaN epilayers with boron contents up to 5.6% were grown on SiC substrates by metal–organic chemical vapor deposition. The effects of boron incorporation on the structural and optical properties were studied by high-resolution X-ray diffraction (XRD), atomic force microscopy (AFM), Raman spectroscopy and photoluminescence (PL) spectroscopy. XRD reciprocal-space maps around the symmetric 0002 and asymmetric 11 {overline 2} 4 reflections allowed evaluation of the lattice constants and lattice mismatch with respect to the underlying substrate. XRD rocking curves and AFM measurements indicated the mosaic microstructure of the epilayer. The impact of boron content on crystallite size, tilt and twist is evaluated and the correlation with threading dislocation density is discussed. The deterioration of optical properties with increasing boron content was assessed by Raman and PL spectroscopy.

This article presents a demonstration of the improved performance of an X-ray free-electron laser (FEL) using the optical klystron mechanism and helical undulator configuration, in comparison with the common planar undulator configuration without optical klystron. The demonstration was carried out at Athos, the soft X-ray beamline of SwissFEL. Athos has variable-polarization undulators, and small magnetic chicanes placed between every two undulators to fully exploit the optical klystron. It was found that, for wavelengths of 1.24 nm and 3.10 nm, the required length to achieve FEL saturation is reduced by about 35% when using both the optical klystron and helical undulators, with each effect accounting for about half of the improvement. Moreover, it is shown that a helical undulator configuration provides a 20% to 50% higher pulse energy than planar undulators. This work represents an important step towards more compact and high-power FELs, rendering this key technology more efficient, affordable and accessible to the scientific community.

X-rays can penetrate deeply into biological cells and thus allow for examination of their internal structures with high spatial resolution. In this study, X-ray phase-contrast imaging and tomography is combined with an X-ray-compatible optical stretcher and microfluidic sample delivery. Using this setup, individual cells can be kept in suspension while they are examined with the X-ray beam at a synchrotron. From the recorded holograms, 2D phase shift images that are proportional to the projected local electron density of the investigated cell can be calculated. From the tomographic reconstruction of multiple such projections the 3D electron density can be obtained. The cells can thus be studied in a hydrated or even living state, thus avoiding artifacts from freezing, drying or embedding, and can in principle also be subjected to different sample environments or mechanical strains. This combination of techniques is applied to living as well as fixed and stained NIH3T3 mouse fibroblasts and the effect of the beam energy on the phase shifts is investigated. Furthermore, a 3D algebraic reconstruction scheme and a dedicated mathematical description is used to follow the motion of the trapped cells in the optical stretcher for multiple rotations.

Advances in physics have been significantly driven by state-of-the-art technology, and in photonics and X-ray science this calls for the ability to manipulate the characteristics of optical beams. Orbital angular momentum (OAM) beams hold substantial promise in various domains such as ultra-high-capacity optical communication, rotating body detection, optical tweezers, laser processing, super-resolution imaging etc. Hence, the advancement of OAM beam-generation technology and the enhancement of its technical proficiency and characterization capabilities are of paramount importance. These endeavours will not only facilitate the use of OAM beams in the aforementioned sectors but also extend the scope of applications in diverse fields related to OAM beams. At the FERMI Free-Electron Laser (Trieste, Italy), OAM beams are generated either by tailoring the emission process on the undulator side or, in most cases, by coupling a spiral zone plate (SZP) in tandem with the refocusing Kirkpatrick–Baez active optic system (KAOS). To provide a robust and reproducible workflow to users, a Hartmann wavefront sensor (WFS) is used for both optics tuning and beam characterization. KAOS is capable of delivering both tightly focused and broad spots, with independent control over vertical and horizontal magnification. This study explores a novel non-conventional `near collimation' operational mode aimed at generating beams with OAM that employs the use of a lithographically manufactured SZP to achieve this goal. The article evaluates the mirror's performance through Hartmann wavefront sensing, offers a discussion of data analysis methodologies, and provides a quantitative analysis of these results with ptychographic reconstructions.

High-pressure crystallographic data can be measured using a diamond anvil cell (DAC), which allows the sample to be viewed only along a cell vector which runs perpendicular to the diamond anvils. Although centring a sample perpendicular to this direction is straightforward, methods for centring along this direction often rely on sample focusing, measurements of the direct beam or short data collections followed by refinement of the crystal offsets. These methods may be inaccurate, difficult to apply or slow. Described here is a method based on precise measurement of the offset in this direction using a confocal optical device, whereby the cell centre is located at the mid-point of two measurements of the distance between a light source and the external faces of the diamond anvils viewed along the forward and reverse directions of the cell vector. It is shown that the method enables a DAC to be centred to within a few micrometres reproducibly and quickly.

Here, it is investigated how optical properties of single scatterers in interacting multi-particle systems influence measurable structure factors. Both particles with linear gradients of their scattering length density and core–shell structures evoke characteristic deviations between the weighted sum 〈S(Q)〉 of partial structure factors in a multi-component system and experimentally accessible measurable structure factors SM(Q). While 〈S(Q)〉 contains only the structural information of self-organizing systems, SM(Q) is additionally influenced by the optical properties of their constituents, resulting in features such as changing amplitudes, additional peaks in the low-wavevector region or splitting of higher-order maxima, which are not related to structural reasons. It is shown that these effects can be systematically categorized according to the qualitative behaviour of the form factor in the Guinier region, which enables assessing the suitability of experimentally obtained structure factors to genuinely represent the microstructure of complex systems free from any particular model assumption. Hence, a careful data analysis regarding size distribution and optical properties of single scatterers is mandatory to avoid a misinterpretation of measurable structure factors.

The federal government should foster collaboration and decrease obstacles that can keep foreign atomic, molecular, and optical (AMO) physicists from working in the United States, if the nation is to maintain its position as leader in these fields, says a new report from the National Academies of Sciences, Engineering, and Medicine.

Replacing traditional manual sorting methods with a machine has enabled this well-known food producer to meet two key objectives, as well as solving the problem of labor shortages.

The newly installed equipment is rated to sort up to 20,000 lbs of product per hour.

RemoteMD enables Key service technicians to securely connect to a customer’s sorter for real-time remote monitoring, as well as technical support.

The high-capacity system identifies and removes undesirable product defects and foreign material (FM) such as shells, shell fragments, rocks, and wood sticks.

This online exhibition introduced was not a one-time business event, but provides regular business services based on various events and promotions.

With detailed research and shopping trends analyzed from 2021 and 2022, and via surveys and analysis, learn more about GlassesUSA.com's newly found trend report

SmartBuyGlasses has qualified opticians available online to answer customers' questions and help them choose lenses and frames.

In contrast to delayed sampling, optical flow cells create 'virtual window' into processes

Kemtrak products bring wide range of benefits to industrial processes

Li Jiayue, an exceptionally talented artist from China’s Sichuan province, specializes in intricate three-dimensional optical illusions that seem to disappear into their surroundings, captivating viewers with his ability to transform ordinary objects like lampposts, tree trunks, and even large buildings into extensions of their backgrounds. Although he initially pursued a major in electrical automation, his […]

Sophia Antipolis, 30 April 2024

The ETSI TeraFlowSDN community is proud to announce the third release of TeraFlowSDN, an innovative and robust SDN orchestrator and controller, delivering a fully featured Network Automation Platform. In this latest release, TeraFlowSDN enhances its capabilities with the integration of an Optical SDN controller, expanding device support to include gNMI and OpenConfig protocols. It also features enriched network integrations for end-to-end orchestration like IP over DWDM, L3VPN, MEC, and network topology exposure. The management of network topologies is improved with the addition of a new BGP-LS speaker able to discover the topologies, and a new Forecaster component is introduced, providing predictive insights for network management. These additions substantially augment the versatility and management capabilities of the TeraFlowSDN platform.

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Mahr Federal has introduced a new addition to their growing family of optical shaft measurement systems.

3D optical profiling, developed in the early 1990s, is crucial for high-resolution measurement of optics, semiconductors, medical devices, and precision machining. Recent developments have expanded its capabilities, allowing high-resolution surface texture measurements over many square millimeters in minutes.

The Corsair Scimitar RGB Elite is a mouse that offers plenty of buttons, turns heads with its MMO and MOBA gaming performance, and excellent build quality.... [PCSTATS]

Addition of new function codes for optical networks beyond 100 Gb/s

Requirements for optical distribution frame (ODF) on-site smart maintenance

Case study of reduction of air-conditioning energy by optical fibre based thermometry

Technical Report on Optical fibres, cables and systems

Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant

Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant

Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant

LSTP-GLSR Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant [Superseded]

GSTR-SDM - Optical fibre, cable, and components for space division multiplexing transmission

LSTP-GLSR - Guide on the use of ITU-T L-series Recommendations related to optical technologies for outside plant

Requirements for passive optical nodes - Fibre distribution box

Construction of optical/metallic hybrid cables

Optical fibre cable elements for microduct blowing-installation application

Criteria for optical cable installation with minimal existing infrastructure

Air-assisted installation of optical fibre cables

Optical fibre cable network maintenance

Water detection in underground closures for the maintenance of optical fibre cable networks with optical monitoring system

Field mountable single-mode optical fibre connectors

5G wireless fronthaul requirements in a passive optical network context

40-Gigabit-capable passive optical networks 2 (NG-PON2): Physical media dependent (PMD) layer specification

Indoor optical camera communication transceivers - System architecture, physical layer and data link layer specification

5G wireless fronthaul requirements in a passive optical network context