Finite-difference Time-domain Modeling of Laser-induced Periodic Surface Structures

Gerardus Richardus, Bernardus, Engelina Römer, J.Z.P. Skolski, J. Vincenc Obona, Bert Huis in 't Veld

Research output: Contribution to journalArticleAcademicpeer-review

8 Citations (Scopus)
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Abstract

Laser-induced periodic surface structures (LIPSSs) consist of regular wavy surface structures with amplitudes the (sub)micrometer range and periodicities in the (sub)wavelength range. It is thought that periodically modulated absorbed laser energy is initiating the growth of LIPSSs. The “Sipe theory” (or “Efficacy factor theory”) provides an analytical model of the interaction of laser radiation with a rough surface of the material, predicting modulated absorption just below the surface of the material. To address some limitations of this model, the finite-difference time-domain (FDTD) method was employed to numerically solve the two coupled Maxwell's curl equations, for linear, isotropic, dispersive materials with no magnetic losses. It was found that the numerical model predicts the periodicity and orientation of various types of LIPSSs which might occur on the surface of the material sample. However, it should be noted that the numerical FDTD model predicts the signature or “fingerprints” of several types of LIPSSs, at different depths, based on the inhomogeneously absorbed laser energy at those depths. Whether these types of (combinations of) LIPSSs will actually form on a material will also depend on other physical phenomena, such as the excitation of the material, as well as thermal-mechanical phenomena, such as the state and transport of the material
Original languageEnglish
Pages (from-to)1325-1333
JournalPhysics procedia
Volume56
DOIs
Publication statusPublished - 2014

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lasers
periodic variations
finite difference time domain method
micrometers
signatures
laser beams
energy
wavelengths
excitation
interactions

Keywords

  • IR-91724
  • METIS-304990

Cite this

Römer, Gerardus Richardus, Bernardus, Engelina ; Skolski, J.Z.P. ; Vincenc Obona, J. ; Huis in 't Veld, Bert. / Finite-difference Time-domain Modeling of Laser-induced Periodic Surface Structures. In: Physics procedia. 2014 ; Vol. 56. pp. 1325-1333.
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abstract = "Laser-induced periodic surface structures (LIPSSs) consist of regular wavy surface structures with amplitudes the (sub)micrometer range and periodicities in the (sub)wavelength range. It is thought that periodically modulated absorbed laser energy is initiating the growth of LIPSSs. The “Sipe theory” (or “Efficacy factor theory”) provides an analytical model of the interaction of laser radiation with a rough surface of the material, predicting modulated absorption just below the surface of the material. To address some limitations of this model, the finite-difference time-domain (FDTD) method was employed to numerically solve the two coupled Maxwell's curl equations, for linear, isotropic, dispersive materials with no magnetic losses. It was found that the numerical model predicts the periodicity and orientation of various types of LIPSSs which might occur on the surface of the material sample. However, it should be noted that the numerical FDTD model predicts the signature or “fingerprints” of several types of LIPSSs, at different depths, based on the inhomogeneously absorbed laser energy at those depths. Whether these types of (combinations of) LIPSSs will actually form on a material will also depend on other physical phenomena, such as the excitation of the material, as well as thermal-mechanical phenomena, such as the state and transport of the material",
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Finite-difference Time-domain Modeling of Laser-induced Periodic Surface Structures. / Römer, Gerardus Richardus, Bernardus, Engelina; Skolski, J.Z.P.; Vincenc Obona, J.; Huis in 't Veld, Bert.

In: Physics procedia, Vol. 56, 2014, p. 1325-1333.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Finite-difference Time-domain Modeling of Laser-induced Periodic Surface Structures

AU - Römer, Gerardus Richardus, Bernardus, Engelina

AU - Skolski, J.Z.P.

AU - Vincenc Obona, J.

AU - Huis in 't Veld, Bert

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PY - 2014

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