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Air-Spaced Etalon

Air-Spaced Etalon

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Air-spaced etalons are two extremely parallel plates polished to very tight specification with an air gap between them. Using a ULE or fused silica as a gasket that is optically contacted between the two plates creates the air gap. Designed with special partial reflecting etalon coating and AR coatings result in improved transmission. The mechanical design is robust and our etalon has great thermal stability.

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