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Fiber-coupled laser-driven flyer plates system
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View: Figures


Image of FIG. 1.
FIG. 1.

The schematic of fiber-coupled laser-driven flyer experimental setup.

Image of FIG. 2.
FIG. 2.

Beam profiles of the fiber exit. (a) Burned pattern and (b) Far field energy distribution.

Image of FIG. 3.
FIG. 3.

A tested fiber endface. (a) The micrograph of precision mechanical polishing surface, (b) 3D view of surface profile measured by WYKO white light interferometer, and (c) the surface roughness measured by WYKO white light interferometer.

Image of FIG. 4.
FIG. 4.

The schematic diagram of a laser-driven flyer formation.

Image of FIG. 5.
FIG. 5.

The pictures of coating film on the optics substrate. (a) Bad coating quality and (b) good coating quality.

Image of FIG. 6.
FIG. 6.

The picture of the fiber array probe endface.

Image of FIG. 7.
FIG. 7.

Plot of the typical timing marks produced by a flyer impaction. [The peaks represent the reflected light from the front surface of the flyer (t 1 ) and the light produced by shock compression at the fiber end faces (t 2 ).Δt is the time difference.]

Image of FIG. 8.
FIG. 8.

Flyer average velocity vs laser pulse energy. (Spot radius R = 0.46 mm, effective energy loss r = 0.37, pulse width t = 15 ns, each point on the graph is represents the average of three test data).

Image of FIG. 9.
FIG. 9.

Flyer average velocities vs incident fluence for 5.5 μm thick composite and Al foils.

Image of FIG. 10.
FIG. 10.

Plot of the timing marks for flyer planarity measurement.

Image of FIG. 11.
FIG. 11.

Photographs of flyer breakaway from a film. (a) SEM pictures and (b) the step profile.

Image of FIG. 12.
FIG. 12.

Flyer impacted onto a PMMA substrate over a standoff distance of 0.1 mm. (a) The optical microscopy (left) and SEM photograph (right) and (b) the step profile.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Fiber-coupled laser-driven flyer plates system