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Optical constants of BeO (Beryllium monoxide)
Edwards and White 1991: n(e) 0.44–7.0 µm

Wavelength: µm

Complex refractive index (n+ik)[ i ]

n   k   LogX   LogY   eV

Derived optical constants

Dispersion formula [ i ]



Extraordinary ray (e). Room temperature


D. F. Edwards and R. H. White, "Beryllium Oxide," in E. D. Palik (ed.), Handbook of Optical Constants of Solids II, Academic Press, Orlando, 1991, pp. 805-814.


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Beryllium monoxide, BeO

Beryllium oxide (BeO) is a ceramic material that is prized for its outstanding thermal conductivity and electrical resistivity, making it a valuable material for high-performance applications in the electronics and aerospace industries. In the context of optics, BeO is less commonly used but its high thermal conductivity, low thermal expansion, and excellent dielectric properties make it a candidate for specialized optical applications that require thermal stability. The material is typically produced using methods like hot pressing, and it can be sintered into various shapes and sizes. It is worth noting that BeO is toxic and requires special handling procedures to ensure safety during fabrication and use. Though its optical applications are limited compared to other more conventional optical materials, BeO's unique thermal and electrical properties position it as an intriguing material for research and specialized applications where its unique capabilities can be leveraged.

Other names

  • Beryllia
  • Beryllium oxide
  • Beryllium(II) oxide


  • Bromellite

External links