True versus effective Kerr nonlinear response in optical filamentation

Tolliver, Joseph Thomas; Kolesík, M.

doi:10.1364/oe.26.030172

Cited by 2 publications

(2 citation statements)

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“…The latter leads to energy relaxation of excited electrons toward the lattice, inducing an energy deposition into the material and subsequent modifications [20][21][22]. This model should also be suitable for its implementation into a Maxwell solver [19,[23][24][25][26] to describe the coupled laser propagation and electron dynamics that generally take place for such physical systems [10,19,[26][27][28][29]. * guillaume.duchateau@u-bordeaux.fr A candidate fulfilling previous requirements relies on the numerical resolution of optical Bloch equations (OBE) where the time-dependent laser electric field is the input parameter [23,28].…”

Section: Introductionmentioning

confidence: 99%

Optical Bloch modeling of femtosecond-laser-induced electron dynamics in dielectrics

et al. 2020

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A model based on optical Bloch equations is developed to describe the interaction of femtosecond laser pulses with dielectric solids, accounting for optical-cycle-resolved electron dynamics. It includes the main physical processes at play: photoionization, impact ionization, direct and collisional laser heating, and recombination. By using an electron band structure, this approach also accounts for material optical properties as nonlinear polarization response. Various studies are performed, shedding light on the contribution of various processes to the full electron dynamics depending on laser intensity and wavelength. In particular, the standard influence of the impact ionization process is retrieved.

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Section: Introductionmentioning

confidence: 99%

Optical Bloch modeling of femtosecond-laser-induced electron dynamics in dielectrics

et al. 2020

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“…In view of the above-mentioned studies, such a model should account for the photo-ionization and the electron dynamics in the conduction band where electrons may further absorb photons and undergo collisions. Ultimately, these models should be suitable for their implementation into a Maxwell solver [23,24] or Unidirectional pulse propagation equation solver [25,26] to describe the coupled laser propagation and electron dynamics that generally take place for such physical systems [27][28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Optical Bloch modeling of few-cycle laser-induced electron dynamics in dielectrics

Smetanina,

Martinez,

Thiele

et al. 2019

Preprint

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We develop a new model of laser-matter interaction based on Optical Bloch Equations, which includes photo-ionization, impact ionization, and various relaxation processes typical of dielectric materials. This approach is able to describe the temporal evolution of the electron dynamics in the conduction band driven by few-cycle laser pulses of any wavelength. Moreover, the nonlinear polarization response of both centrosymmetric and non-centrosymmetric materials can be described while ensuring the proper selection rules for the harmonics emission.

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True versus effective Kerr nonlinear response in optical filamentation

Cited by 2 publications

References 59 publications

Optical Bloch modeling of femtosecond-laser-induced electron dynamics in dielectrics

Optical Bloch modeling of femtosecond-laser-induced electron dynamics in dielectrics

Optical Bloch modeling of few-cycle laser-induced electron dynamics in dielectrics

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