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120mW Laser Diode

Oclaro’s (Denville, NJ) HL63142DG high power red laser diode offers an inbuilt monitor photodiode at a lasing wavelength of 637nm. It is a unique design which enables system designers to control optical power output by monitoring the photodiode current and adjusting power variants and temperature for precise control and constant performance.

Posted in: Products, Photonics

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Laser-Induced Damage to Large Core Optical Fiber by High Peak Power Laser

In this paper we present a study of laser damage to large core multimode glass optical fibers by high peak laser power of up to 175 kW. Fibers samples prepared with polymer coatings having different refractive indices were tested in a two point bend tester while transmitting laser light. The peak power used in the experiment clearly differentiated the performance among the samples. A polymer coating having lower refractive index significantly improves the fiber resistance to bending while transmitting laser. This observation provides important insight into the damage mechanism for this particular failure mode.

Posted in: Photonics, White Papers

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Designing Ring Projections for Hermetic Sealing

Product Engineer at Miyachi Unitek, Mark Sunico offers suggestions for developing ideal ring projection designs for hermetic sealing. The whitepaper covers the whole process; from basic concepts to choosing the right weld head controller, head, power supply, and schedule -- all to ensure a reliable final product.

Posted in: Photonics, White Papers

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It Takes Two: Benefits of Using Laser Beam Welding Together with Electron Beam Welding

Laser beam welding (LBW) and electron beam (EBW) welding each have unique benefits. However, many component designs incorporate both EB and laser welds. In this paper, Joining Technologies outlines how performing both types of welding at the same facility can streamline the manufacturing process and select the right joining process.

Posted in: Photonics, White Papers

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Laser Marking for ID and Traceability Within the Medical Industry

Laser marking provides easy and effective labeling for medical devices. The use of lasers to mark surgical instruments has become of greater significance, however, the parameters used in these applications are not always fully appreciated. The medical industry, in particular, has utilized laser technology primarily to mark, weld, and cut medical devices for years. Lasers address the need for microscopic applications: to cut widths measurable in microns, spot welds with heat affected zones barely visible to the unaided eye, and highly resolved biocompatible markings that enable traceability of instruments and implants. In common with other industries, medical devices and pharmaceutical businesses turn to lasers for a one-step, fast, flexible, permanent, and a highly automated marking process.

Posted in: Bio-Medical, Custom & Contract Manufacturing, Packaging, Optics/Photonics, Fiber Optics, Lasers & Laser Systems, FDA Compliance/Regulatory Affairs, Medical, Briefs, MDB

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Organic Photovoltaic Technology

Organic photovoltaic (OPV) technology has been rapidly growing in performance and popularity over the past few years and is expected to become a major PV technology within the next decade. Here’s why.

Posted in: Features, Photonics, Articles

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Using CVD Diamond to Cool Hot Devices

Increasing power densities and decreasing transistor dimensions are hallmarks of many of today’s semiconductor devices, including high-voltage power transistors, laser diodes, and RF power amplifiers. GaN devices, such as power converters for photovoltaic cells and cellular base-station power amplifiers, are further enabling higher power densities in smaller die sizes. Both trends are significantly increasing the thermal management challenge within the chip and surrounding package or module.

Posted in: Applications, Photonics, Application Briefs

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White Papers

Working With Mechanical Motion Subsystems
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Key Procedures and Aqueous Cleaning Agents for Metal and Electronic Component Cleaning
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Today’s Advanced Hose and Hydraulic Systems
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Solar Electric Systems – Power Reliability
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Oscilloscope Fundamentals
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IEC 61131-3 Now in Motion
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