Optical Surfaces Ltd. (Surrey, UK) offers Fabry-Perot etalons in a range of shapes and sizes up to 150 mm in diameter with matching accuracies to lambda/300. Etalons are used in telecommunications, lasers, and spectroscopic applications to measure the wavelength of light. Optical Surfaces Ltd. manufactures Fabry-Perot etalons in two basic forms: air-spaced or solid. Both types can be designed for use at customer-defined wavelengths within the range 190nm to about 2 microns. The Fabry-Perot etalons are available in materials including UV grade Silica and Germanium.
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