< More Test & MeasurementSubscribe to our E-NewslettersPhotonics.com Test & Measurement Tech Pulse (9/11/2019)
Photonics.com Test & Measurement Tech Pulse
Test & Measurement Tech Pulse is a special edition newsletter from Photonics Media and Bristol Instruments covering key developments in laser technology.
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Wednesday, September 11, 2019 |
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September 2019
Test & Measurement Tech Pulse is a special edition newsletter from Photonics Media and Bristol Instruments covering key developments in test & measurement technology. Manage your Photonics Media membership at Photonics.com/subscribe.
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Measuring Up with High-Power Fiber Lasers
As power levels increase, fiber lasers have also become increasingly reliable, affordable, and easier to implement, thus they have found their way into more applications. Regardless of the industrial application, each system requires that the working laser beam be consistent and its performance verified.
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Bristol Instruments Inc.
High Speed Laser Wavelength Meter
Bristol Instruments’ 871 Laser Wavelength Meter measures laser wavelength at a sustained rate of 1 kHz, enabling the wavelength characterization of every single pulse for most lasers. The combination of proven Fizeau etalon technology and automatic calibration with a built-in wavelength standard ensures the uncompromised accuracy needed for the most meaningful experimental results. Operation is available from 375 nm to 2.5 μm.
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Compact Laser Detects Greenhouse Gases Using Mid-IR Source
A system developed at École Polytechnique Fédérale de Lausanne, composed of a standard laser and a photonic chip, uses a mid-infrared light source to detect greenhouse and other gases. The team took a commercially available fiber laser and combined it with a waveguide chip to reliably generate lightwaves in the MIR spectrum.
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Measuring Aspheres: Selecting 2D or 3D Metrology
As aspheres become more prevalent in optical systems and more companies design systems that include them, it is crucial that both designers and manufacturers understand what is needed and what the limitations are in regard to metrology. An understanding of 2D and 3D metrology can help designers and manufacturers make the right choices when characterizing aspherical lenses.
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Terahertz Technology Is Heating Up
Researchers at ETH Zurich have reported the highest operating temperature of a quantum cascade laser, which eliminates a major barrier in the practical implementation of the technology. The team used a design that has long been known to allow for higher temperatures, but has been relatively difficult to achieve due to the intense level of precision required.
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Welding with Pulsed Lasers Protects Temperature-Sensitive Materials
A new ceramic welding technology developed by engineers at the University of California, San Diego and the University of California, Riverside uses a series of short, ultrafast laser pulses to melt ceramic materials along the interface between two ceramic parts and fuse them together. Heat builds up only at the interface, so the melting is localized.
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