Products

Solar Cell Processing Disk

Jenoptik (Jena, Germany) has developed the JenLas® disk IR50 for MWT and EWT (Metal Wrap Through and Emitter Wrap Through). The laser beam fits the infrared wavelength range at 1030nm with a flexible tunable pulse length. The 45-watt system is suitable for laser drilling of silicon wafers, which then allow for the efficient production of back-contact solar cells.

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Solarization-Resistant Fibers

Fiberguide Industries (Stirling, NJ) has introduced a full line of standard solarization-resistant fibers for deep UV applications. The fibers are suitable for spectroscopy, lithography, and excimer laser delivery applications where fibers are exposed to deuterium lamp transmission (190nm to 230nm) or an ArF-Excimer (193nm) laser. Prolonged UV transmission below 260nm causes solarization in optical fibers, reducing their UV transmittance significantly. Fiberguide’s fibers use a modified core preform that protects fiber from UV damage. They exhibit long-term stability at 30-40% transmission (for 215nm). Fiber core sizes can be produced from 50μm to greater than 1,000μm.

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Quantum Cascade Laser Mounts

ILX Lightwave Corporation (Bozeman, MT) has released the LDM-4872 Quantum Cascade Laser Mount with case temperature control. Designed for quantum cascade lasers, the LDM-4872 offers a wide temperature control range, the ability to operate the QCL under vacuum, and an optional XYZ stage with multiple mid-IR lens options. The LDM-4872 supports C-Block, Alpes ST and NS chip on carrier packages, as well as customer proprietary QCL packages. An integral thermoelectric module and a high-performance water-cooled cold plate provide an active temperature control range of -30°C to 30°C with heat loads up to 10W. The optional XYZ stage provides precise adjustment even when the LDM-4872 is under vacuum. Precision differential adjustment screws for the X and Y axes provide 25μm/rev fine adjustment. The knurled lens cartridge has 64 threads per inch for precise Z adjustment.

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Technical Paper on Pixel Sub-Stepping

PI (Auburn, MA) has published a paper on image resolution enhancement and image stabilization for electronic imaging sensors based on fast piezo actuation. The paper explains different piezoelectric motion principles such as flexure mechanisms and ultrasonic motors. Traditionally, increasing the resolution of common imaging detectors has required an increase of chip size or reduction of pixel size, both of which are undesirable options. With pixel sub-stepping, the recording area is moved on predefined paths with a defined frequency. The”dithering,” where the travel is less than the size of a pixel, causes the pixel to be exposed several times on the recording area, producing a virtual “pixel multiplier” that can significantly improve the resolution without negative side effects.

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Optical Coatings for Plastics

Deposition Sciences (Santa Rosa, CA) has developed optical thin film coatings to be deposited on materials such as Ultem®, Zeonex®, and a variety of polycarbonate plastics. These rugged coatings operate from the visible through the infrared spectral wavelengths and are suitable for diverse applications where lightweight and low cost optics are specified, such as LED lighting and medical devices. Other applications include UAV optics and photovoltaic solar systems.

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High-Speed Megapixel Camera

Photron (San Diego, CA) has developed a new imaging system, the Fastcam SA5, which delivers 7,500 fps at 1024 × 1000 megapixel resolution. The camera features a 12-bit monochrome (36-bit RGB color) sensor with twenty micron square pixels, delivering color fidelity and dynamic range. This standalone, one-piece system has an ISO/ASA of 6400 as tested against ISO 12232. The Fastcam SA5 with 1-microsecond global shuttering features a 5-inch LCD screen and is available in three memory configurations: 8 GB (up to .75 sec record time at 7,500 fps and full resolution); 16 GB (up to 1.49 sec at 7,500 fps and full resolution); 32 GB (up to 2.98 sec at 7,500 fps, 1K × 1K). Applications include PIV, inkjet, combustion, fluid dynamics, cavitation, materials research, and aerospace.

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Silica Fiber Bundles for Spectrometer Systems

CeramOptec (East Longmeadow, MA) has increased the temperature spec on its drop-in replacement silica fiber bundles for spectrometer systems. Applications with unusually high or low temperatures can use these fibers to work at a temperature range of -190°C to 600°C. CeramOptec uses a patented PCVD process to create high-grade specialty fibers with a wide range of profiles and dopants, numerical apertures from 0.06 to 0.66, and high radiation resistance levels.

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