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Peer-reviewedCC BY 4.0Optics Express

Modeling coherent nonlinear microscopy of axially layered anisotropic materials using FDTD

  • Mohammad Reza Farhadinia
  • Nicolas Olivier
Open at sourcePDFDOICite

Abstract

Providing quantitative interpretation of coherent nonlinear microscopy images, such as second-harmonic generation (SHG) or third-harmonic generation (THG), can often be hampered by the complex phase-matching conditions, especially in the presence of sample linear heterogeneity. We recently presented a numerical pipeline using the finite-difference time-domain (FDTD) method to take this heterogeneity into account for THG microscopy. However, due to software restrictions, we only considered nonlinear materials with diagonal nonlinear susceptibilities. We now expand the recently developed FDTD approach to model second-order and third-order nonlinear microscopy for anisotropic, non-diagonal materials that obey Kleinman Symmetry, organized in layers along the optical axis, and validate our simulations on well-described geometries.

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Cite

BibTeXRIS
BibTeX
@article{farhadinia2026modeling,
  title = {{Modeling coherent nonlinear microscopy of axially layered anisotropic materials using FDTD}},
  author = {Mohammad Reza Farhadinia and Nicolas Olivier},
  journal = {Optics Express},
  year = {2026},
  month = oct,
  doi = {10.1364/oe.603121},
  url = {https://cnrs.hal.science/hal-05782714v1},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Modeling coherent nonlinear microscopy of axially layered anisotropic materials using FDTD
AU  - Mohammad Reza Farhadinia
AU  - Nicolas Olivier
PY  - 2026
DA  - 2026/10/01
JO  - Optics Express
DO  - 10.1364/oe.603121
UR  - https://cnrs.hal.science/hal-05782714v1
AB  - Providing quantitative interpretation of coherent nonlinear microscopy images, such as second-harmonic generation (SHG) or third-harmonic generation (THG), can often be hampered by the complex phase-matching conditions, especially in the presence of sample linear heterogeneity. We recently presented a numerical pipeline using the finite-difference time-domain (FDTD) method to take this heterogeneity into account for THG microscopy. However, due to software restrictions, we only considered nonlinear materials with diagonal nonlinear susceptibilities. We now expand the recently developed FDTD approach to model second-order and third-order nonlinear microscopy for anisotropic, non-diagonal materials that obey Kleinman Symmetry, organized in layers along the optical axis, and validate our simulations on well-described geometries.
SN  - 1094-4087
ER  -