Photonics/Optics

Additive-Manufactured, Very Lightweight, Diamond Turned Aspheric Mirror

Industrial-grade, lightweight mirrors used in military and aeronautics have tight specifications brought on by demanding performance parameters. For example, a mirror that is used in an orbiting telescope would have to be extremely lightweight, stiff, and be configured to operate in extreme temperatures. These parameters traditionally work against each other. A material that is stiff is typically heavy, and a mirror that is lightweight and machinable may greatly distort when exposed to extreme heat or cold. Furthermore, materials that fit some of these parameters may not be easily machined to create a mirror — an art that requires high-precision tooling.

Posted in: Briefs, Photonics, Mirrors, Additive manufacturing, Lightweighting
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Development of a Sodium LiDAR for Spaceborne Missions

Laser and electro-optic technologies are under development to remotely measure sodium (Na) by adapting existing LiDAR technology with spaceflight heritage. The developed instrumentation will serve as the core for planning a heliophysics mission targeted to study the composition and dynamics of Earth's mesosphere based on a spaceborne LiDAR that will measure the mesospheric Na layer.

Posted in: Briefs, Photonics, Lidar, Lidar, Sodium, Test equipment and instrumentation
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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.

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 detectable 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, Photonics, Mirrors, Optics, Optics, Radiation
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Get Optical Products to Market Faster Using Modern Virtual Prototyping

Companies developing cutting-edge lasers, optics, and imaging products face significant hurdles getting products to market ahead of competitors. Learn about a new way for optical and mechanical engineers to collaborate that’s changing the way leading companies develop optical products. Learn:

Posted in: White Papers, Imaging, Manufacturing & Prototyping, Lasers & Laser Systems, Optics
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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.

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Posted in: White Papers, White Papers, Photonics
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New Products: May 2017 Photonics & Imaging Insider

High Efficiency Double Spot Beam Splitter

LASER COMPONENTS (Bedford, NH) has introduced the HEDS (High Efficiency Double Spot) beam splitter. Double spot beam splitters are diffractive optical elements (DOE) used for separating an incoming laser beam into two identical beams. They are most commonly used in lithography as well as high power applications such as cutting and perforation. Until now, a small portion of light was lost in higher diffraction orders. Some applications cannot tolerate even a 1% loss, so this DOE boasts an efficiency well above the standard value of 81%. HEDS is available in wavelengths between 193 nm and 10.6 µm.

Posted in: Products, Photonics
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Coming to a Lab Bench Near You: Femtosecond X-Ray Spectroscopy

The ephemeral electron movements in a transient state of a reaction important in biochemical and optoelectronic processes have been captured and, for the first time, directly characterized using ultrafast X-ray spectroscopy at the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab). Like many rearrangements of molecular structures, the ring-opening reactions in this study occur on timescales of hundreds of femtoseconds (1 femtosecond equals a millionth of a billionth of a second). The researchers were able to collect snapshots of the electronic structure during the reaction by using femtosecond pulses of X-ray light on a tabletop apparatus.

Posted in: News, Lasers & Laser Systems, Optics, Photonics, Measuring Instruments, Test & Measurement
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Engineers Invent Method to Control Light Propagation in Waveguides

A team of Columbia Engineering researchers, led by Applied Physics Assistant Professor Nanfang Yu, has invented a method to control light propagating in confined pathways, or waveguides, with high efficiency by using nano-antennas. To demonstrate this technique, they built photonic integrated devices that not only had record-small footprints but were also able to maintain optimal performance over an unprecedented broad wavelength range.

Posted in: News, Nanotechnology, Optical Components, Optics, Photonics
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Need Glass? Push Print.

Lawrence Livermore National Laboratory scientists and academic collaborators from the University of Minnesota and Oklahoma State University have demonstrated the synthesis of transparent glass through 3D printing, a development that could ultimately lead to altering the design and structure of lasers and other devices that incorporate optics.

Posted in: News, Lasers & Laser Systems, Optical Components, Optics
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Using Sensor Fusion to Analyze Laser Processing in Additive Manufacturing

Sensor: “A device that detects or measures a physical property and records, indicates, or otherwise responds to it.” A sensor is a device that detects a physical quantity and responds by transmitting a signal.

Posted in: Articles, Imaging, Manufacturing & Prototyping, Lasers & Laser Systems, Photonics, Lasers, Sensors and actuators, Lasers, Sensors and actuators, Additive manufacturing
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