Photonics/Optics

Advanced Digital Microscopes Providing Simple Solutions to Common Microscopy Issues

Thanks to a combination of high-quality optics and advanced digital imaging technology, today’s newest digital microscopes provide efficient solutions to a variety of common microscope challenges faced by users of conventional optical and digital microscopes. The following represent 10 conventional microscope issues and 10 solutions made possible with current digital microscope technology.

Posted in: Articles, Features, Imaging, Photonics, Microscopy

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Using UV LEDs to Cure Fiber Optic Cables

UV spot curing systems have been used in assembly processes for over 30 years. Historically, mercury arc lamps have been the curing source however, LED technology has recently advanced to where it provides a valuable solution for UV curing.

Posted in: White Papers, Optics, Photonics

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Fiber Optic Rotary Joints Add a Spin to Sensing, Mobile, and Robotic Fiber Systems

To the passing optical signals, fiberoptic rotary joints (FORJs) are nothing more than fiber connectors, which provide connection between one or multiple fibers. Their unrestricted ability to rotate, however, gives them a critical role in many sensing, mobile, and robotic fiber systems such as ROVs (remotely operated vehicles), aerostat radars, submarines, satellite antennae, OCT (optical coherence tomography), mining vehicles, cranes, wind turbines, robotic vehicles, broadcasting (mobile cameras), etc. This article discusses some of the applications where optical rotary joints are indispensable. www.princetel.com Download White Paper

Posted in: White Papers, White Papers, Photonics

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Compact, Lightweight, Athermal, Nanocomposite Telescopes with Freeform Optics

Marshall Space Flight Center, Alabama Small space missions such as CubeSats frequently require telescopes with highly sophisticated optical systems that are also low in mass and cost. The very limited spacecraft volume and mass limits also preclude adjustments to maintain critical alignment with change in temperature. Existing systems, especially those that employ folded optical paths with freeform optics, are expensive to fabricate. The optics, and support and metering structures, are also heavy due to the use of high-density material such as glass, aluminum, or nickel.

Posted in: Briefs, Tech Briefs, Imaging, Photonics, Optics, Composite materials, Nanomaterials, Satellites

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One-Micron (1064-nm) Planar External Cavity Laser (PLANEX)

Goddard Space Flight Center, Greenbelt, Maryland A highly reliable, very low-phase and low-amplitude-noise laser is required as an oscillator for the LISA mission. A commercial product made by Redfern Integrated Optics met these requirements (1550 nm PLANEX External Cavity Laser), but it operated at 1.5 microns, not the required LISA wavelength of 1 micron. An ultra-low-noise External Cavity Laser was produced at a wavelength of 1 micron, and was integrated in a butterfly package. The goal is to eventually use this laser in the LISA and GRACE-II missions.

Posted in: Briefs, Tech Briefs, Imaging, Photonics, Lasers, Product development, Packaging

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Invertible Time Invariant Linear Filtering (InTILF) Method for Pattern Detection and Modeling of Stochastic One- or Two- Dimensional Data

This tool can analyze and model surface metrology data for polishing-tool fabricators. Marshall Space Flight Center, Alabama X-ray astronomy offers the opportunity to observe important phenomena, including the early accretion of massive black holes and detecting diffuse ionized intergalactic gas that is heated to X-ray temperatures (>106). One of the technical challenges facing X-ray astronomy is fabricating optics that are properly shaped and smooth enough to produce quality images. Surface defects on the order of the wavelength of the observed spectrum and up to the size of the optical surface must be polished out of the mirrors without leaving a de - tectable pattern because the detectable signal is on the order of magnitude of the noise. This leads to a cycle of polishing and metrology that adds time and expense to optics fabrication.

Posted in: Briefs, Tech Briefs, Imaging, Photonics, Mirrors, Optics, Metal finishing

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3D Imaging Reveals Battery Degradation in Real Time

Using sophisticated 3D imaging, a team at University College London, The European Synchrotron (ESRF), University of Manchester, Harwell Oxford, Oregon State University, and the National Physical Laboratory visualized a battery’s performance loss and internal structural damage. The images of active commercial Li/MnO2 disposable batteries, captured using X-ray computed tomography, will help to improve cell designs.

Posted in: Articles, Features, Imaging, Photonics, Batteries, Imaging and visualization, Performance tests

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