Fresnel retarder | Laser Focus World

Fresnel rhomb achromatic retarder is available in 3- and 5-mm clear aperture diameters and mounted in 2.5-in.-diameter divided-circle rotating mount. Useful frequency range is 0.4 to 2.0 µm. Total internal reflection produces retardation between polarizations in and perpendicular to the incidence plane.

Mini eye-safe laser

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The 200 mm wafers are contrasted in size with the new 300 mm wafers produced using nanoimprint lithography (NIL) to support glass technologies for augmented reality/mixed reality (AR/MR).

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Application in Optical Design: Optimization for Receiver Enclosed Energy in LiDAR Systems

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James C. Wyant with Maria Ruiz in 2014, a first-year graduate student at the College of Optical Sciences, who that year received a Louise Wyant Memorial Scholarship in Optical Sciences. James Wyant and his family are now contributing $2 million and SPIE $500,000 to an educational-funding initiative for optics and photonics.

With $500,000 grant to University of Arizona, SPIE launches $2.5 million endowment matching program

Gooch & Housego (G&H) is partnering with Optex Systems to provide acrylic sighting instruments to the European market. Shown here are some Optex sighting systems.

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Tracks of heavy ions 'imprinted' in lithium fluoride crystals. At the top, spot tracks observed under a fluorescence microscope in plates perpendicular to the heavy ion beam. At the bottom, the ion tracks in the parallel oriented plate (the blurring at both ends of the trace is an artifact of the depth of focus of the microscope). False colors.

Lithium fluoride fluorescent crystals track high-energy heavy ions such as iron

In comparison to previous crystals such as aluminum oxide, LiF crystals also require a less expensive microscope for analysis.

$Operation principles of a differential diffractive optical neural network. Since diffractive optical neural networks operate using coherent illumination, phase and/or amplitude channels of the input plane can be used to represent information.$

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