Photonics/Optics

Samarium Oxide Glaze

Developed for high-energy pulsed Q-switching infrared laser applications, a new, high-absorption samarium oxide glaze from Morgan Advanced Materials (Windsor, UK) means it is now able to offer three grades of glaze for laser systems. The samarium glaze absorbs radiation at the Nd-YAG lasing wavelength of 1064nm, and its further transitions near 940nm, 1120nm, 1320nm and 1440nm. A significant amount of fluorescent radiation at the lasing wavelength escapes laterally from the laser rod into the surrounding pumping cavity. Absorbing this radiation prevents it from being reflected back into the laser rod, which would in turn stimulate decay from the upper laser transition level, thereby limiting the number of excited ions which can occupy that level.

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sCMOS Cameras

With the addition of two new models, PCO (Kelheim, Germany) now provides eight sCMOS-cameras. The new pco.edge 3.1 and pco.edge 4.2LT are now the company’s entry-level cameras. pco.edge 3.1’s features include: 2048 x 1536 pixels resolution; 50 frames per second; 1.1e- med readout noise; 27000 : 1 dynamic range; >60% quantum efficiency; global and rolling shutter readout; and small form factor. pco.edge 4.2LT’s features include: 2048 x 2048 pixels resolution; 40 frames per second; 0.8e- med readout noise; 36000 : 1 dynamic range; >70% quantum efficiency; and a small form factor.

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Deep UV Luminescence Spectrophotometer

McPherson (Chelmsford, MA) has announced a new vacuum ultraviolet universal spectrophotometer, an optical test system optimized for emitting samples like phosphors or photo- and electro-luminescent crystals. It can measure reflectance, transmission and fluorescence emission over its complete working range, 120 nanometers to 2.2 microns. The sample chamber includes high efficiency toroidal optics for focused excitation and sensitive detection. It can operate purged or under vacuum and can interface to commercial cryogenic and heated sample mounts.

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Laser Radiation Detector Screens

The path of invisible laser radiation can be verified using detector cards from Laser Components (Hudson, NH). These cards are ready for immediate application and do not have to be activated or optically charged. The cards for wavelengths from 1.5m to 5m and 5m to 20m can localize the beam path of Hol:YAG, Er:YAG, and CO2 lasers, for example.

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Camera Sensor Module

The VRmTS-20 from VRmagic (Mannheim, Germany) is an external sensor module for the D3 intelligent camera platform. With its compact dimensions of 26 x 26 mm and the flexible cable connection to the camera base unit, the module is particularly suitable for applications with limited or angled space. The sensor module is available as OEM version and as COB S-mount M12 version with different lenses and filter glasses.

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Circular Variable ND Filters

Reynard Corporation (San Clemente, CA) recently announced the complete customization of their Circular Variable Neutral Density (CVND) Filters. This technology is best used in high quality optical systems to change the intensity of light from 100% to less than 0.1%. As the filter rotates, the beam intensity is customized due to the density variation of a gradient metallic coating around the filter. Used from the UV to the far infrared, density neutrality can be achieved for narrow band applications, such as lasers, to wide band applications, such as the spectrum of white light.

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Fiber Optic Connectors

Single Step Polishing After Laser Cleaving With the standardization of 4G wireless, the increase in cloud storage and computing, and the push for faster network data rates, the highest quality passive interconnect systems must be used. While the robustness and size of these interconnections, fiber types, and cable management all play major roles in the backbone, what happens at the tip of the connector also greatly affects the optical performance of the system.

Posted in: Briefs, Photonics

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