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A plasma microlens for ultrashort high power lasers
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View: Figures


Image of FIG. 1.
FIG. 1.

Side view of capillary edge. The capillary entrance is located at the origin stretching leftwards (not shown here) and in diameter. 20 ns after ablation begins the plasma streams into the vacuum (rightward). Shown in figure (a) is the electron density, and in figure (b) the real part of the plasma induced refractive index.

Image of FIG. 2.
FIG. 2.

The ablating laser (red) was focused approximately 3 cm from the capillary entrance. The focused laser (purple) was focused 1 cm before the capillary entrance. The guided pulse was measured at the capillary exit.

Image of FIG. 3.
FIG. 3.

Plasma density as function of capillary radius calculated from the Stark broadening. The solid line is the measurement, gray shading represents the error.

Image of FIG. 4.
FIG. 4.

Laser beam shape at oscillator exit (a), at the exit of experimental system without plasma lens (b), at experimental system exit with plasma lens (c).

Image of FIG. 5.
FIG. 5.

Focused laser train pulse energy as a function of time. The instance of ablating laser hitting the capillary is marked by the dotted line at . Igniting laser yields the intensity increase of guided laser through the capillary by factor of 3.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A plasma microlens for ultrashort high power lasers