The schematic of fiber-coupled laser-driven flyer experimental setup.
Beam profiles of the fiber exit. (a) Burned pattern and (b) Far field energy distribution.
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.
The schematic diagram of a laser-driven flyer formation.
The pictures of coating film on the optics substrate. (a) Bad coating quality and (b) good coating quality.
The picture of the fiber array probe endface.
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.]
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).
Flyer average velocities vs incident fluence for 5.5 μm thick composite and Al foils.
Plot of the timing marks for flyer planarity measurement.
Photographs of flyer breakaway from a film. (a) SEM pictures and (b) the step profile.
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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