Imaging a tunneling ionization front by using a schlieren method |
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Authors: | H. Honda K. Katsura E. Takahashi K. Kondo |
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Affiliation: | (1) Center for Tsukuba Advanced Research Alliance, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan (Fax: +81-298/53-6566, E-mail: honda@tara.tsukuba.ac.jp), JP |
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Abstract: | A schlieren method was used to generate time-resolved images of the tunneling ionization front produced when an ultrashort high-power laser pulse irradiates He gas. By superimposing sequential schlieren images, we obtained information about the laser propagation and found that the ionization front propagated farther with decreasing density of the target gas. Ray-tracing suggested that this density dependence is a result of the spatial distribution of the laser intensity. Received: 20 May 1999 / Revised version: 19 August 1999 / Published online: 27 January 2000 |
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Keywords: | PACS: 52.40.Nk 52.25.Jm 52.50.Jm |
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