Request InfoNewport - New FocusWith a chopping frequency phase-locked to its own internal frequency synthesizer, the Model 3502 optical chopper from New Focus can chop from 4 HZ to 10.65 kHz. The chopper features outputs at the sum and difference of the inner and outer wheel’s chopping frequencies for nonlinear-optics experiments, as well a high-stability phase shifter than can lock two choppers together for long fluorescence-decay measurements. Replacing the 3501 chopper, Model 3502 can achieve variable duty-cycle chopping by mounting two of the same wheels on the chopper head.See full productRelated content from Photonics MediaPRODUCTSBioPhotonics Jan/Feb 2020 IssueVUV and IR MonochromatorThe Model 207 VUV and IR Monochromator from McPherson Inc. is a spectrometer designed for high brightness over a broad spectral range. With the use of custom, gold-coated optics or magnesium...Photonics.com 4/8/2021VCSEL Flood Illuminator ModulesVertical cavity surface emitting laser (VCSEL) flood illuminator modules for driver and occupancy monitoring systems has been announced by II-VI Inc. The devices emit higher optical power and...Photonics Spectra August 2019 IssueLED Panel Mount IndicatorsThe PML50 series of waterproof LED panel mount indicators (PMIs) from Visual Communications Co. features a semi-dome lens for UV protection. Ideal for a range of industries where outdoor status...Photonics.com 9/29/2020Hollow-Core Voice CoilThe HVCM-051-025-013-01 hollow-core voice coil from Moticont features an open aperture of .5 in. and the ability for optics, illumination, laser beams, or cables to pass through. ...ARTICLESPhotonics Spectra June 2020 IssuePhotonic Crystal Emits Super-Planckian Thermal Radiation at Optical WavelengthsSince the late 19th century, scientists have understood that, when heated, all materials emit light in a predictable spectrum of wavelengths. But a material that appears to exceed the limits set by...Photonics.com 5/15/2020Laser-Cooled YbOH Molecules Could Support New Discoveries in PhysicsResearchers at Harvard University and Arizona State University have demonstrated laser cooling of polyatomic YbOH molecules, in a first step toward using these molecules to make precision...Photonics.com 2/4/2020Portable Concussion Detector Uses Infrared Light to Measure Brain MetabolismA new approach to detecting concussion utilizes a laser to deliver infrared (IR) light pulses to the brain, where the light interacts with cytochrome C oxidase (CCO), a mitochondrial enzyme important...Photonics.com 1/31/2020New Podcast Series Will Touch on ‘All Things Photonics’In “All Things Photonics,” a new podcast from the publishers of Photonics Spectra magazine, host Emmett Warren holds intimate conversations with top scientists as they discuss how lasers,...PHOTONICS HANDBOOK ARTICLESPhotonics 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 HandbookAcousto-Optic Devices: Charts showing the characteristics of acousto-optic scanning devices, acousto-optic figures of merit, and solutions for common problems with acousto-optic processor devices.ACOUSTO-OPTIC SCANNING DEVICES: CHARACTERISTICS MODULATORS Material Bandwidth (MHz) Rise Time (ns) Acousto Input Power (W) (Saturation) Material Wavelength Range...Photonics HandbookFlat Optics: Considerations When Buying: To simplify the process when purchasing flat optics, we will discuss the top six factors from a manufacturer’s perspective, all of which affect the three major areas of the purchasing decision: quality, delivery and cost.Flat optics generally perform three main functions: They transmit light (windows), reflect light (mirrors) and fold light (prisms). While most optical manufacturers make spherical and flat optics, a...WHITEPAPERSPhotonics.com 1/14/2021Using Imaging Colorimeters to Correct OLED, MicroLED, and Other Emissive Displays for Production Efficiency and YieldsImaging 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...Photonics.com 7/25/2019How Much Will an Optical Filter Cost?Filters are a critical element in the design of most optical systems. However, optimizing the trade-off between cost and performance isn’t obvious. With nearly a half century of experience in the...Photonics.com 1/14/2021Automated Solutions for SAE Standard HUD MeasurementHead-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...Photonics.com 5/31/2019Tolerance Analysis Tools Take the Guesswork out of a Colorful Illumination Design ProblemTolerance analysis has largely been out of reach for illumination designers because of the time needed to perform the thousands of simulations required to get a meaningful statistical tolerance...WEBINARSPhotonics.com 5/19/2021Quantitative CMOS Imaging – qCMOS: The Dawn of a New EraThis webinar with Peter Seitz, Ph.D., will provide an overview of semiconductor image sensors and introduce photon-resolving quantitative CMOS imaging (qCMOS). Imaging in general and...Photonics.com 3/21/2013Techniques in Biophotonic ImagingFREE WEBINAR Sponsored by: Hamamatsu & Applied Scientific Instrumentation Additional Questions & Answers from the webinar are below: Dr. Kimani C. Toussaint Jr. Quantitative...Photonics.com 1/22/2021Advancements in Photoacoustic Imaging Brighten the Next DecadePhotoacoustic imaging is a hybrid imaging modality that combines both optics and ultrasound. With rich intrinsic optical contrast and high ultrasound resolution at depth, photoacoustic imaging has...Photonics.com 1/20/2021Colorimetry: A Primer on the Science of Color MeasurementThe human eye is a specially calibrated optical instrument. Our eyes have a unique response to different wavelengths of light — a response that builds our perception of color and influences our...PHOTONICS DICTIONARY+ TERMSEDU.photonics.com 9/8/2009free-space optics (FSO)A type of optical communications technology dealing with the use of lasers and other light sources to send telecommunication signals along a line of sight through the atmosphere. Also called...EDU.photonics.com 3/22/2016photonicsThe technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and...EDU.photonics.com 3/5/2018optical chopperA mechanical or electrical-electromagnetic device for periodically interrupting or blocking abeam of light for a brief known interval. The three most common chopper types include the tuning fork...EDU.photonics.com 9/8/2009wedge photometerA photometer that uses a wedge, marked to show its reduction of flux density, to make two light sources equal in intensity for comparison of luminous intensities. This is accomplished by the gradual...VIDEOSPhotonics.com 2/21/2018Photonics 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 1/18/2018Light Matters Extra: Taking Photonics Innovations from the Lab to the Operating Room - 01.2018In this month's Light Matters Extra, we give you an in-depth look at the relationship between researchers and scientists at the University of California Davis, and surgeons and clinicians at nearby...Photonics.com 12/15/2017'Green' Initiatives - LIGHT MATTERS 12/2017On this month's episode of Light Matters, we introduce you to a green energy company that is transforming China's national treasure — the giant panda — into panda-shaped solar farms. We also bring...Photonics.com 3/29/2018Fundamentally Different Photonics - LIGHT MATTERS 03.2018On this month's episode of Light Matters, we take you to the South by Southwest (SXSW) Trade Show in Austin, Texas, as new photonics innovations hit the show floor of the Austin Convention Center....PHOTONICS BUYERS' GUIDE CATEGORIESOptical ChoppersAn optical chopper is a mechanical or electrical-electromagnetic device for passing and then interrupting a beam of light for a known brief interval. Examples include tuning forks, rotating shutters...MonochromatorsA monochromator is an instrument for isolating narrow portions of the spectrum. The spectrum of any light source is formed by a prism or grating, and an exit slit placed in the spectrum selects a...Diffusing Screens for Light Sources and LensesA diffusing-- for light sources and lenses screen is a diffusing screen is a transparent filter that reduces the light (or some wavelengths of the light) passing through it.Fiber Optic Illumination SystemsCOMPANIESPhotonics Buyers' GuideA.R.W. Optical CorporationARW Optical is your reliable manufacturer of quality optics and coatings. Beamsplitters • Prototyping through volume-production quantities • High-performance and durable optical...Photonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' GuideMeller Optics Inc.Meller Optics has been providing high quality optics to defense, medical, laser and industrial markets for over 50 years. Specializing in grinding and polishing of hard, durable materials such as...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...