WACO, Texas, July 6, 2020 — As new materials emerge, thermal conductivity measurements will need to be developed to handle materials with a small size and high thermal conductivity (k). A joint research group has developed two new optical techniques — photoluminescence mapping (PL-mapping) and time-domain thermo-photoluminescence (TDTP) — that provide rapid, nondestructive characterization of k in materials and that require minimal sample preparation. PL-mapping and TDTP could provide new tools for further development of semiconductor-based high-k materials, according to the team of scientists from...Read full articleRelated content from Photonics MediaARTICLESCMOS-Compatible Spectrotemporal Compressor Could Support Ultrafast Optical Signal ProcessingResearchers at the Singapore University of Technology and Design (SUTD), the A*STAR Institute of Microelectronics, and MIT have developed an all-optical spectrotemporal pulse compression system. The...Photonics.com 7/14/2021Perovskite Prodding Reveals Structural DynamicsA Rice University research team, with help from the Department of Energy’s SLAC National Accelerator Laboratory, has directly measured the structural dynamics in 2D perovskites. The...Photonics Spectra April 2023 IssueLow-Cost Solar Cell Amplifies Performance Potential of PerovskiteAn international research team has produced an all-perovskite tandem solar cell with exceptionally high open-circuit voltage and efficiency. The prototype device demonstrates the potential of...Photonics.com 11/28/2022STMicroelectronics Makes Metasurface Tech from Metalenz Available to Consumers: Week in Brief: 06/10/22S&P Dow Jones Indices announced that ON Semiconductor will replace IPG Photonics in the S&P 500. IPG Photonics will replace Yelp Inc. in the S&P MidCap 400. SANTA CLARA, Calif....Photonics.com 6/10/2022PRODUCTSSide-Pumped ModulesThe SP17 and SP18 high-power side-pumped modules from Focuslight Technologies Inc. offer peak powers of 30 and 5 kW, respectively. The SP17 offers high small signal gain of >55 while the...Photonics Spectra January 2023 IssueFiber Optic PyrometerThe PSC-GRF11N pyrometer from Process Sensors Corp. is a fiber optic, two-color device designed for lower starting temperature measurements beginning at 300 °C. Four temperature ranges are...Photonics.com 8/30/2021UV-Cure EpoxyThe Flashbond® UV-8403 UV-cure epoxy from EpoxySet Inc. is designed to withstand high-humidity environments. The material passes 85/85 testing for 1000 hours, 95% humidity tests at 100...Photonics.com 3/2/2022UV CameraThe ATX081S-UC 10GigE PoE+ UV camera from LUCID Vision Labs Inc. is equipped with the Sony 8.1-MP CMOS IMX487 global shutter sensor for capturing images across the 200- to 400-nm UV range. With...Photonics Spectra March 2023 IssuePHOTONICS HANDBOOK ARTICLESLaser 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 HandbookOptical Delay Lines: Key to Time-Resolved Measurements: To obtain an accurate means of creating reliable delays in any time-resolved spectroscopy or dynamic experiment, several factors about the delay line stage must be considered to reduce or eliminate errors associated with linear stages.One of the most critical elements of any time-resolved spectroscopy and dynamics experiment is the optical delay line. A typical optical delay line consists of a retroreflector or folding mirrors on...Photonics HandbookAspheric Lenses: Design Considerations: This first of two articles will cover design and manufacturing options for aspheres; the second will include more detail on manufacturing and testing processes. These articles will provide the tools optics designers need to tailor their designs to the appropriate manufacturing process and to optimize the cost of component fabrication.Aspheric surfaces are powerful tools that combine the optical corrections of multiple lenses into a single element (Figure 1) and affect performance in ways that spherical optics cannot. For example,...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 HandbookWHITEPAPERSCharacterizing 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 12/10/2021Analysis of Metallic Impurities in Si Wafers Using Fully Automated VPD-ICP-MSThis work demonstrates the coupling of an IAS Expert_PS VPD (vapor phase decomposition) system with the Perkinelmer NexION 5000 ICP-MS, delivering a fully automated, reliable solution for the...Photonics.com 6/8/2021Measuring Absorptance and Refractive Index of Thin Films with UV/Vis/NIRAn optical coating consists of a combination of thin film layers that create interference effects used to enhance transmission or reflection properties for an optical system. In this paper we will...Photonics.com 8/19/2021Characterization of Dry Electrolyte Polishing ProcessThe preservation of the form is demonstrated by complementary form measurements using Ai Focus Variation technique. S neox Five Axis is a versatile metrology tool that perfectly suits our measurement...Photonics.com 12/10/2021WEBINARSLaser Measurement Solutions for Materials Microprocessing ApplicationsThose who use lasers in materials microprocessing applications — such as drilling via holes in PCBs, performing OLED display lift-off, and cutting smartphone cover glass — are faced with...Photonics.com 6/15/2022Managing Laser Degradation in Industrial ApplicationsLasers are made of physical matter. Therefore, the natural degradation of their materials can cause variability in performance. Aging optics often cause slow changes in laser behavior and, when left...Photonics.com 11/2/2022Noncontact Optical-Based Metrology for Microlens CharacterizationMicrolenses are critical components used in a wide variety of consumer devices and industrial sensors, ranging from cellphone cameras and virtual reality goggles to 3D displays and advanced...Photonics.com 10/5/2022High-Power Diode Laser Modules for Manufacturing and OEM IntegrationHigh-power diode lasers have progressed significantly since their first appearance in the market. Today, these lasers are able to utilize high power levels and high-percentage electro-optical...Photonics.com 12/14/2022PHOTONICS DICTIONARY TERMSsubstrate blankMaterials (usually ceramics or other semiconductors) that are molded into approximate forms to use as supports for large mirrors or as blocks for microcircuits.EDU.photonics.com 9/8/2009mirror blankThe material on which the reflecting coating for a given mirror design is applied. It may be glass, quartz, Cer-Vit or metal. The thickness must be adequate to prevent distortion of the surface under...EDU.photonics.com 9/8/2009heat equationA calorimetric calculation from which the temperature vs. time dependence of any point on a sample can be determined, provided surface and bulk absorption, thermal conductivity and heat transfer...EDU.photonics.com 9/8/2009beryllium oxideA dielectric ceramic material used in laser capillary tubes because of its high electrical resistivity and high thermal conductivity (half that of copper).EDU.photonics.com 9/8/2009MEDIAPIC 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 2/21/2018Penn's Agarwal Group Focuses on Light-Matter Interactions for Optoelectronic DevicesThe Agarwal Group at the University of Pennsylvania's Department of Materials Science and Engineering focuses on understanding how light interacts with small scale nanostructures. They also work to...Photonics.com 10/1/2018Light Tomorrow with TodayLuminate NY, the only optics, photonics and imaging (OPI) accelerator and investment fund in the world, announced the final winners at the Light Tomorrow with Today event in Rochester, NY. For the...Photonics.com 7/2/2018PHOTONICS BUYERS' GUIDE CATEGORIESDiamond CrystalsGermanium CrystalsLight-Emitting Diode ChipsDisplay Test EquipmentCOMPANIESOhara Corporation, Western OfficeOhara manufactures precision optical glasses: strip/slab, cut/molded blanks, pressings, high homogeneity blanks, fine gobs, polished ball lenses, near-UV transmitting i-Line glass, ceramic...Photonics Buyers' GuideGlass Fab Inc.A History of Quality Since 1974 Glass Fab Inc. has met customers' stringent specifications by providing fabricated parts made of optical glass, filter glass, fused quartz and fused silica, low...Photonics Buyers' GuideLaCroix Precision OpticsOptics that Defend, Build, Cure and Discover The LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have placed LaCroix Precision Optics...Photonics Buyers' GuideExcelitas Technologies Corp.Excelitas Technologies® Corp. is a leading industrial technology manufacturer focused on delivering innovative, market-driven photonic solutions to meet the illumination, optical, optronic,...Photonics Buyers' Guide