Selectively emissive refractory metal surfaces

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

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

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
Volume38
Issue number2
DOIs
StatePublished - Dec 1 1981

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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