Transverse and longitudinal optical properties of graphite

✍ Scribed by S. Ergun; J.B. Yasinsky; J.R. Townsend

• Publisher: Elsevier Science
• Year: 1967
• Tongue: English
• Weight: 455 KB
• Volume: 5
• Category: Article
• ISSN: 0008-6223
• DOI: 10.1016/0008-6223(67)90057-7

✦ Synopsis

Optical anisotropy of single crystals of graphite has been studied in the visible and U.V. spectrum from measurements of reflectance of polarized light normally incident on the (1012) face employing two immersion media. The spectrum of the real part of the transverse dielectric constant suggests the presence of electronic absorption and the imaginary part exhibits a peak at 4.8 eV explained by "n resonance". The real longitudinal dielectric constant remains more or less invariant and the imaginary part is zero or too small to be measured in the wave energy range 2-5*5 eV, indicating a transparency to polarized light when the electric vector lies along the optic axis.