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Optical constants of Cu (Copper)
Johnson and Christy 1972: n,k 0.188–1.937 µm

Wavelength: µm
 (0.1879–1.9370)  
 

Complex refractive index (n+ik)[ i ]


n   k   LogX   LogY   eV

Derived optical constants

Comments

Room temperature

References

P. B. Johnson and R. W. Christy. Optical constants of the noble metals, Phys. Rev. B 6, 4370-4379 (1972)

Data

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INFO

Copper, Cu

Copper (Cu) is a highly versatile transition metal with excellent electrical and thermal conductivity. While its primary applications span electrical wiring, plumbing, and various industrial machinery, it also finds specialized uses in optics. Notably, polished, bare copper is often the material of choice for high-power infrared mirrors, including those used in CO2 lasers, due to its high reflectivity in the infrared spectrum and exceptional thermal resilience. The metal's malleability and corrosion resistance further allow it to be shaped into intricate forms, making it invaluable across a range of industries. Whether in general construction or specific niches like high-power optical components, copper's multifaceted properties make it a material of critical importance.

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