Microscopic Energy Transport Through Photon-Electron-Phonon Interactions During Ultrashort Laser Ablation of Wide Bandgap Materials. Part I: Photon Absorption
The new phenomena induced by femtosecond lasers lead to the new area of ultrafast science. It is a significant challenge to explain the phenomena associated with complex non-equilibrium and non-linear processes. Although there is a growing body of experimental observation, a comprehensive model remains undeveloped. We review the challenges in understanding the photon absorption stage mainly for the femtosecond ablation of wide bandgap materials at the intensities of 1013-1014 W/cm2. Major opinions and challenges in ionization mechanisms are presented by primarily considering multiphoton ionization and avalanche ionization.
L. Jiang et al., "Microscopic Energy Transport Through Photon-Electron-Phonon Interactions During Ultrashort Laser Ablation of Wide Bandgap Materials. Part I: Photon Absorption," Zhongguo Jiguang/Chinese Journal of Lasers, Science Press, Jan 2009.
The definitive version is available at http://dx.doi.org/10.3788/CJL20093603.0779
Mechanical and Aerospace Engineering
Keywords and Phrases
Avalanche Ionization; Femtosecond Laser Ablation; Multiphoton Ionization; Photon-Electron Interactions; Wide Bandgap Materials
Article - Journal
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