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Optical Surfaces Ltd (Surrey, UK) can supply Fabry-Perot etalons in a range of shapes and sizes up to 150mm in diameter with matching accuracies to lambda/300. Etalons are widely used in telecommunications, lasers and spectroscopic applications to measure the wavelength of light. Fabry Perot etalons are available from Optical Surfaces Ltd in two basic forms - air- spaced or solid. Designed for use at customer-defined wavelengths within the range 190nm to about 2 microns, they are supplied with wedge angles of 5 min of arc for smaller diameters, rising in steps to a wedge angle of 40 min of arc for diameters greater than 70mm.
This year's Consumer Electronics Show (CES) in Las Vegas showcased many new consumer products featuring voice control. LG, for example, introduced a smart refrigerator equipped with Amazon's Alexa voice service. Other CES technologies with...
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