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Photonics HandbookGeneral Reference

Coefficients of Expansion and Densities of Optical Materials

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Material Coefficient of Expansion (×10−6 per °C) Density (lbs/cubic in.) Aluminum 23.8 0.10 Brass (cast) 18.8 0.30 Carbon (diamond) 1.2 0.25 Carbon (graphite) 7.9 — Copper 16.2 0.32 Germanium 5.9 0.20 Glass (optical) maximum 15.0 0.22 minimum 4.0 0.08 average 8.0 0.11 Gold 14.0 0.70 Invar (36% Ni) 0.9 0.30 Iron (cast) 10.0 0.27 Iron steel 13.2 0.28 Lead 28.0 0.41 Magnesium (cast) 27.0 0.06 Nickel 12.6 0.32 Plastics (optical) 65.0 0.04 Platinum 9.0 0.77 ...Read full article

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    optical materials
    Optical materials refer to substances or compounds specifically chosen for their optical properties and used in the fabrication of optical components and systems. These materials are characterized by their ability to interact with light in a controlled manner, enabling applications such as transmission, reflection, refraction, absorption, and emission of light. Optical materials play a crucial role in the design and performance of optical systems across various industries, including...
    densityMaterialsoptical materialsGeneral Reference

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