Maxwell-Bloch modeling of an x-ray pulse amplification in a one-dimensional photonic crystal
| Autor: | Philippe Jonnard, Jean-Michel André, Olivier Peyrusse |
|---|---|
| Přispěvatelé: | Physique des interactions ioniques et moléculaires (PIIM), Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR), Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Physics
[PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics] Bragg's law Population inversion Laser 01 natural sciences 010305 fluids & plasmas Computational physics law.invention symbols.namesake Nonlinear system Maxwell's equations Bloch equations law 0103 physical sciences symbols Spontaneous emission 010306 general physics Photonic crystal |
| Zdroj: | Physical Review A : Atomic, molecular, and optical physics [1990-2015] Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2021, 103, pp.043508. ⟨10.1103/PhysRevA.103.043508⟩ Physical Review A Physical Review A, American Physical Society, 2021, 103, pp.043508. ⟨10.1103/PhysRevA.103.043508⟩ |
| ISSN: | 1050-2947 1094-1622 |
| Popis: | International audience; We present an implementation of the Maxwell-Bloch (MB) formalism for the study of x-ray emission dynamics from periodic multilayer materials whether they are artificial or natural. The treatment is based on a direct Finite-Difference-Time-Domain (FDTD) solution of Maxwell equations combined with Bloch equations incorporating a random spontaneous emission noise. Besides periodicity of the material, the treatment distinguishes between two kinds of layers, those being active (or resonant) and those being off-resonance. The numerical model is applied to the problem of Kα emission in multilayer materials where the population inversion could be created by fast inner-shell photoionization by an x-ray free-electron-laser (XFEL). Specificities of the resulting amplified fluorescence in conditions of Bragg diffraction is illustrated by numerical simulations. The corresponding pulses could be used for specific investigations of non-linear interaction of x-rays with matter. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|