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Journal of the Optical Society of America

Journal of the Optical Society of America

  • Vol. 67, Iss. 1 — Jan. 1, 1977
  • pp: 54–59

Optical constants of lithium deposits as determined from the Kramers-Kronig analysis

Monique Rasigni and Georges Rasigni  »View Author Affiliations

JOSA, Vol. 67, Issue 1, pp. 54-59 (1977)

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Optical constants of Li have been determined between 0 and 10.7 eV, using Kramers-Kronig analysis of the reflectance data. The dielectric constant ∊ = ∊1 + i2 and the optical conductivity are deduced and compared with theoretical calculations. The plasma energy as determined from the condition ∊1(ω) = 0 is near 6.73 eV and the energy loss function peaks at 6.90 eV. The effective mass m* deduced from the analysis of ∊1 in terms of a nearly-free-electron model is found equal to 1.80m. The optical conductivity exhibits important differences from the theoretical calculations. These discrepancies have been attributed to properties of the metal surfaces measured, particularly roughness and granularity.

© 1977 Optical Society of America

Monique Rasigni and Georges Rasigni, "Optical constants of lithium deposits as determined from the Kramers-Kronig analysis," J. Opt. Soc. Am. 67, 54-59 (1977)

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