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Smetanina E, González de Alaiza Martínez P, Thiele I, Chimier B, Bourgeade A, Duchateau G. Optical Bloch modeling of femtosecond-laser-induced electron dynamics in dielectrics. Phys Rev E 2020; 101:063206. [PMID: 32688561 DOI: 10.1103/physreve.101.063206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Accepted: 06/12/2020] [Indexed: 11/07/2022]
Abstract
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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Affiliation(s)
- E Smetanina
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications, UMR5107, 33405 Talence, France.,Department of Physics, University of Gothenburg, SE-412 96 Göteborg, Sweden.,Faculty of Physics, M.V. Lomonosov Moscow State University, 119313 Moscow, Russia
| | | | - I Thiele
- Department of Physics, Chalmers University of Technology, SE-412 96 Göteborg, Sweden
| | - B Chimier
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications, UMR5107, 33405 Talence, France
| | - A Bourgeade
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications, UMR5107, 33405 Talence, France
| | - G Duchateau
- Université de Bordeaux, CNRS, CEA, Centre Lasers Intenses et Applications, UMR5107, 33405 Talence, France
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