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The silicon ablation removal rate vs laser intensity.
(Color online) The time evolution of the probe beam transmission drop through the ablation plume with two timing windows: (a) delay time spanning up to , and (b) delay time shortened to up to to magnify the first dip of the probe transmission signal.
(Color online) The time elapsed from the onset of the laser pulse to the fast drop of the probe transmission (solid squares) and the maximum percentage drop of that probe transmission (solid triangles) as a function of the laser intensity. The experimental data are shown together with curve fitted lines.
The estimated percentage of laser energy deposited in supporting the fast plume ejection. The solid line is the curve-fitting result to guide the eyes.
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