Plasma Wave Generation in a Self-Focused Channel of a Relativistically Intense Laser Pulse
- Clayton, C. E.
- Tzeng, K.-C.
- Gordon, D.
- Muggli, P.
- Mori, W. B.
- Joshi, C.
- Malka, Victor
- Najmudin, Z.
- Modena, A.
- Neely, D.
- Dangor, A. E.
DOIAbstract
International audienceEvidence for self-channeling of a relativistically intense laser pulse in an underdense plasma is presented through Schlieren and 90° Thomson sidescatter images. Using collective Thomson scattering of a probe beam, we observe that relativistically propagating plasma waves are excited over the entire length of the channel, up to 12 Rayleigh lengths (≈4mm). From the wave amplitude, the intensity inside the channel is estimated to be ∼1018W/cm2
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