| Original Articles |
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Time-Resolved Investigation of Ionization of Clusters Irradiated by a Strong Laser |
| LIU Jian-Sheng1,2;LI Ru-Xin1;WANG Cheng1;LI Shao-Hui1;WANG Xiang-Xin1;ZHU Pin-Pin1;ZENG Zhi-Nan1;NI Guo-Quan1;XU Zhi-Zhan1;LIU Jing-Ru2 |
| 1Laboratory for High Intensity Optics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
2Northwest Institute of Nuclear Technology, Xi’an 710024 |
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| Cite this article: |
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LIU Jian-Sheng, LI Ru-Xin, WANG Cheng et al 2003 Chin. Phys. Lett. 20 1492-1495 |
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Abstract Ionization dynamics of clusters irradiated by chirped femtosecond lasers is investigated by using a linearly chirped pulse spectral interferometry with a time resolution of less than 100 fs. The production of an average charged ～Xe18+ and ～Kr9+ ions indicates a strong energy coupling between laser and cluster. Ultrafast depletion of the probing laser is observed to be strictly coincident with the ionization front as seen in other experiments. Moreover, a two-step ionization process for Xe and Kr clusters irradiated by high-intensity lasers has been observed, which implies the role of resonance enhancement during the cluster explosion.
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| Keywords:
36.40.Vz
36.40.Gk
52.50.Jm
36.40.-c
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Published: 01 September 2003
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| PACS: |
36.40.Vz
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(Optical properties of clusters)
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36.40.Gk
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(Plasma and collective effects in clusters)
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52.50.Jm
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(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
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36.40.-c
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(Atomic and molecular clusters)
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