Selectively emissive refractory metal surfaces

H. G. Craighead, R. E. Howard, D. M. Tennant

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


In this letter is decribed a spectrally selective tungsten light-emitting surface, employing submicron surface texturing produced by reactive ion etching. The average emissivity of this surface throughout the visible wavelength range of 0.3-0.7 μm is greater than 0.9 compared to ∼0.4 for ordinary tungsten. At longer infrared wavelengths, however, the emissivity of the etched surface approaches that of a smooth tungsten surface. This results in enhanced efficiency in the production of visible light.

Original languageEnglish (US)
Pages (from-to)74-76
Number of pages3
JournalApplied Physics Letters
Issue number2
StatePublished - 1981
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


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