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Ultra-high precision Etalon pairs Specialists in high precision optics - Optical Surfaces Ltd. (www.optisurf.com) is routinely able to supply matched pairs of Fabry-Perot etalons in a range of shapes and sizes up to 150mm in diameter with matching accuracies to lambda /300.
A pair of precisely matched optical flats, coated to give high resolution and throughput in the spectral range of interest, is a common component of many advanced interferometric techniques.
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