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SPECTROSCOPY WHITE PAPERS
Curing of an Optical Adhesive by UV Irradiation by DSC
Optical adhesives are used in many industries such as semiconductors and chip manufacturing where solvents are undesirable. Power compensated instruments are the best choice for fast analysis of the curing profile and measurement of the energy of curing reactions as the design allows quick detection and response to changes in the optical material. This application note describes how Photo-DSC using power compensation technique is a powerful tool for studying and quantitatively characterizing...
Characterization of Advanced Semiconductor Materials and Processes with Nanoscale IR Spectroscopy
This application note demonstrates the successful application of Tapping AFM-IR to distinguish the chemical footprints of several nanoscale lithographic patterns consisting of complex molecular assemblies with excellent spatial resolution of 4 nm....
Trusted Glass Measurements for Better Product Development
The PerkinElmerUL270 integrating sphere is a unique accessory that allows new accuracy to be achieved in the measurement of light-diffusing materials and adequately solves the various measurement problems involved in measuring transmittance and...
Near-Field Scanning Optical Microscopes: Capabilities and Applications
NSOM techniques and instrumentation have evolved to become vital tools for material characterization, providing high-quality data and continually expanding utility, spot-on accuracy, adaptability, and exceptionally high definition. This article...
Raman Spectroscopy as a Tool for Studying Polymer Phase Transitions
Semicrystalline polymers, such as polyethylene, are the largest group of commercially produced plastics. Heating and cooling between phase transitions is used in industry for shaping these polymers into their final product. A phase transition occurs...
Automated Solutions for SAE Standard HUD Measurement
Head-up display (HUD) technology is one of the largest growth areas in the automotive market, and standard measurement criteria are rapidly being defined to evaluate augmented projections for visual quality and safety of HUD systems. This paper...
Fractional Pixel Method for Improved Pixel-Level Measurement and Correction (Demura) of High-Resolution Displays
As display resolutions increase, imaging systems are challenged to continue to provide accurate pixel-level measurements while applying increasingly limited relative imaging resolution during single-image analysis (necessary for production...
Methods for Measuring Display Defects and Mura as Correlated to Human Visual Perception
Human vision and perception are the ultimate determinants of display quality, however human judgment is variable, making it difficult to define and apply quantitatively in research or production environments. Traditional methods for automated defect...
Using Imaging Colorimeters to Correct OLED, MicroLED, and Other Emissive Displays for Production Efficiency and Yields
Imaging colorimeters can improve OLED and microLED display production by ensuring visual quality of displays — measuring brightness and color uniformity at the pixel and subpixel level to correct poorly performing panels and safeguard manufacturing...
The Easy Way to Upgrade Your Spectrometer
Optical fiber switches are the perfect solution to analyze different light sources with only one spectrometer. By utilizing multiple channels of the detector system at the same time, the light quality remains high while costs are low. Controlled by...
Multilayer Coating for Extreme Ultraviolet Experiments
Extreme ultraviolet (EUV) multilayer coatings have been designed and fabricated for many kinds of experiments including high-order harmonics application. In this paper, we present recent results obtained with Ru/B4C, Mo/Si, Zr/Al-Si, SiC/Mg...
“Fingerprint” vs Handheld Raman Applications and the Different Optical Filters That Enable Them
Raman spectroscopy is a powerful non-invasive, non-contact tool capable of identifying molecular constituents of samples. Wavelength selective optical filters are used to block the dominant Rayleigh scattered light and transmit only the Raman...
Discrimination of Cooking Oils Using Raman Spectroscopy
In this application note, Edinburgh Instruments highlights how Raman spectroscopy, in combination with chemometrics, can be used to identify cooking oil adulteration.
PDH Technique with Moku:Lab’s Laser Lock Box — An FPGA-based all-in-one Solution for Laser Frequency Locking
The Pound-Drever-Hall (PDH) technique was first introduced by R.V. Pound, Ronald Drever, and John L. Hall in 1983. It is a widely used method to match the emitting optical frequency of a laser to a Fabry-Perot cavity. PDH locking uses light...
Temperature Dependent Triplet States of Benzophenone
Triplet excited states in molecules and materials play an important role in many practical applications, from phosphorescent pigments to photodynamic therapy, and even photovoltaic solar cells. New materials that exhibit triplet state photochemistry...
Reducing Interference Pattern in Multimode Optical Fiber
The spectrographic imaging quality from Integral Field Units (IFUs) in astronomical imaging are limited due to Whispering Gallery Modes (WGM) in multimode optical fibers. Modifications in the production process reduces unwanted interference in...
Photobiological Safety Measurements
In recent decades, advances in materials science and technology have substantially improved the quality of lighting products. LEDs in particular have become more rugged, with higher efficiencies, greater stability, and emit significantly higher...
Boost Efficiency in the QC Laboratory: How NIRS Helps Reduce Costs up to 90%
Underestimation of quality control (QC) processes is one of the major factors leading to internal and external product failure, which have been reported to cause a loss of turnover between 10–30%. As a result, many different norms are put in place...
Understanding the Light-Harvesting Photosystem II
The ability of plants to live, thrive, and survive on sunlight provides unsurpassed motivation to understand and mimic this process for solar energy production. Photosystem II has long been studied and admired by scientists eager to harness its...
Emission Tail of Indium Phosphide Quantum Dots
Semiconductor quantum dots (QDs) have unique tunable photoluminescence properties which lend them to a range of important technological applications including solid-state lighting, displays, photovoltaics, and biomedical imaging. Indium phosphide...
Identifying Thermally Activated Delayed Fluorescence using a Spectrofluorometer
TADF was first observed in 1924 by Francis Perrin. In 2012 it received a resurgence in attention when Professor Chihaya Adachi and colleagues at Kyushu University used the TADF mechanism to harvest triplet excitons in organic light emitting diodes...
Photodigm HOT™ DBR Lasers
The Photodigm family of high-power edge-emitting Distributed Bragg Reflector (DBR) laser diodes is based on Photodigm’s proprietary single epi growth DBR laser architecture. Since their introduction over 10 years ago, Photodigm DBR lasers have...
Advantages of VPH Gratings
Transmission gratings open up many design options for the optical designer. In this tech note, we consider one special type: volume phase holographic (VPH) gratings. With benefits ranging from superior optical performance and design flexibility to...
Benefits of Client-Server Systems for Quality Control with Vis-NIR Spectroscopy
Analyzer systems monitoring product quality can offer substantial advantages when organized in a client-server network compared to the more traditional local installation. This white paper presents different client-server setups and their benefits....
Kinetics of Photocatalysis Reactions Studied by Transient Absorption Spectroscopy
Photocatalysis 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 oxides which are employed as particles in solution....
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PHOTONICS MARKETPLACE
Search more than 4000 manufacturers and suppliers of photonics products and services worldwide:
LATEST HEADLINES
Photonic MEMS Switches Offer Commercial, Production Benefits
Apr 19, 2021
Nonlinear Near-Field Optical Microscopy Images Evanescent Waves in Real Time
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White-Reflectance Paint Cools Need for Air Conditioning
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Optikos Expands Manufacturing Facility, Operations
Apr 16, 2021
Thermo Fisher Scientific Extends Reach in Pharma, Biotech with PPD Acquisition
Apr 15, 2021
Lightwaves Penetrate Opaque Materials, Emerge Unchanged
Apr 15, 2021
Light-Activated Molecule Eliminates Alzheimer’s Protein in Live Mice
Apr 15, 2021
AFRL, Industry Partner Place Hybrid Silicon Lasers in the Crosshairs
Apr 15, 2021
NIST’s Agricomb Measures Gas Emissions from Cows
Apr 14, 2021
SUSS MicroTec Appoints CEO, COO
Apr 14, 2021
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LATEST PRODUCTS
Cognex Edge Intelligence (EI)
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FEATURES
Thermal Imaging Takes the Temperature of New Applications
Photonics Spectra
, Apr 2021
ASLMS 2021 Examines Laser-Based Treatments, Diagnosis in Online Setting
BioPhotonics
, Mar/Apr 2021
Neuromorphic Processing Set to Propel Growth in AI
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Lidar and Data Fusion Increase AI Performance
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BOOKSTORE
Polarization-Maintaining Fiber Market and Competitive Analysis — June 2019
Published by Light Wave Venture LLC Updated in June 2019 Fiber Optic Gyroscopes & Lasers Lead...
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