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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 12 — Apr. 20, 2007
  • pp: 2229–2233

Modified Debye model parameters of metals applicable for broadband calculations

Hongfeng Gai, Jia Wang, and Qian Tian  »View Author Affiliations


Applied Optics, Vol. 46, Issue 12, pp. 2229-2233 (2007)
http://dx.doi.org/10.1364/AO.46.002229


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Abstract

The finite-difference time-domain method can provide broadband results if the excitation source is a pulse. This demands that the parameters of modeled materials have to be applicable over broad frequency bands. We optimize the modified Debye model parameters for gold, silver, copper, platinum, and aluminum using a large-scale nonlinear optimization algorithm. The complex relative permittivities calculated using the optimized parameters agree well with experimental values over broad frequency bands. The associated root-mean-square deviations are 0.49%, 3.52%, 4.13%, 1.64%, and 0.66%, respectively. We also provide an example of broadband calculations. The obtained broadband results are verified by a series of steady-state calculations.

© 2007 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(160.3900) Materials : Metals
(310.0310) Thin films : Thin films

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 14, 2006
Manuscript Accepted: January 8, 2007
Published: April 3, 2007

Citation
Hongfeng Gai, Jia Wang, and Qian Tian, "Modified Debye model parameters of metals applicable for broadband calculations," Appl. Opt. 46, 2229-2233 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-12-2229

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