An improved multi-step one-photon-absorption method for analyzing laser induced damage mechanisms of materials
| Autor: | Zhilin Xia, Yunti Pu, Minhui Wang, Ping Ma |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Electron density
Photon Materials science business.industry 02 engineering and technology Nanosecond 021001 nanoscience & nanotechnology Laser 01 natural sciences Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Computational physics 010309 optics Optics law Ionization 0103 physical sciences Femtosecond Electrical and Electronic Engineering 0210 nano-technology business Absorption (electromagnetic radiation) Pulse-width modulation |
| Zdroj: | Optik. 136:341-348 |
| ISSN: | 0030-4026 |
| DOI: | 10.1016/j.ijleo.2017.02.059 |
| Popis: | the method of treating multi-photon ionization as some one-photon-absorption processes by introducing transition states has achieved good applications. In this paper, this method has been improved to extend its application scope of laser pulse width. In the improved model, some parameters without explicit physical meaning have been removed. For example, the parameter of energy fraction used for evaluating lattice temperature has been discarded, and the lattice temperature was evaluated according to an electron-phonon scattering process. Besides, more ionization mechanisms have been considered in calculating the electron density. The model described in this paper is suit for analyzing the damage processes induced by laser pulses with pulse width from femtosecond to nanosecond. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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