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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 21 — Oct. 21, 2013
  • pp: 25467–25479

FDTD method for laser absorption in metals for large scale problems

Chun Deng and Hyungson Ki  »View Author Affiliations

Optics Express, Vol. 21, Issue 21, pp. 25467-25479 (2013)

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The FDTD method has been successfully used for many electromagnetic problems, but its application to laser material processing has been limited because even a several-millimeter domain requires a prohibitively large number of grids. In this article, we present a novel FDTD method for simulating large-scale laser beam absorption problems, especially for metals, by enlarging laser wavelength while maintaining the material’s reflection characteristics. For validation purposes, the proposed method has been tested with in-house FDTD codes to simulate p-, s-, and circularly polarized 1.06 μm irradiation on Fe and Sn targets, and the simulation results are in good agreement with theoretical predictions.

© 2013 Optical Society of America

OCIS Codes
(260.3910) Physical optics : Metal optics
(350.3390) Other areas of optics : Laser materials processing
(050.1755) Diffraction and gratings : Computational electromagnetic methods

ToC Category:
Physical Optics

Original Manuscript: August 26, 2013
Revised Manuscript: October 8, 2013
Manuscript Accepted: October 8, 2013
Published: October 17, 2013

Chun Deng and Hyungson Ki, "FDTD method for laser absorption in metals for large scale problems," Opt. Express 21, 25467-25479 (2013)

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