Interaction of Short Laser Pulses in Wavelength Range from Infrared to X‐ray with Metals,Semiconductors, and Dielectrics |
| |
| Authors: | N A Inogamov A Ya Faenov V V Zhakhovskii I Yu Skobelev V A Khokhlov Y Kato M Tanaka T A Pikuz M Kishimoto M Ishino M Nishikino Y Fukuda S V Bulanov T Kawachi Yu V Petrov S I Anisimov V E Fortov |
| |
| Institution: | 1. Landau Institute for Theoretical Physics, Russian Academy of Sciences, Chernogolovka 142432, Russia;2. Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow 125412, Russia;3. Kansai Photon Science Institute, Japan Atomic Energy Agency, Kyoto 619‐0215, Japan;4. Institute of Laser Engineering, Osaka University, Osaka 565‐0871, Japan;5. The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka 431‐1202, Japan |
| |
| Abstract: | Laser‐matter interaction is defined by an electronic band structure of condensed matter and frequency ωL of electromagnetic radiation. In the range of moderate fluences, the energy absorbed by electrons from radiation finally thermalizes in the ion thermal energy. The thermalization processes are different for optical as compared with X‐ray quanta and for metals relative to semiconductors and dielectrics, since the light absorption and electron‐electron, electron‐ion dynamics are sensitive to the electron population in a conduction band and the width of a forbidden gap. Although the thermalization processes are different, the final state is simply a heated matter. Laser heating creates powerful stresses in a target if duration of a laser pulse τL is short in acoustic time scale. Nucleation and material removal take place under such stresses. Such way of removal is called here the spallative ablation. Thus the spallative ablation is an ablation mechanism universally important for qualitatively different materials and quanta (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim) |
| |
| Keywords: | Spallative ablation by optical and X‐ray lasers two‐temperature warm dense matter |
|
|
