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Dependences of the sample-assisted air plasma emission signal on laser intensity for ZF13 (circles), K9 (filled squares), and ZK7 (stars) glass samples. The solid curves are linear fits to the experiment data and the slopes are , and for ZF13 (analog to SF11), K9 (analog to BK7), and ZK7 (analog to SK4), respectively. In all the three cases, the sample is located away from the beam focus. The laser pulse duration is about .
Micrographs of a laser ablated microstructure on a piece of microscope slide obtained, respectively, by laser-induced air ionization plasma microscopy (LIAIM) (a) and the ordinary Olympus BX51 optical microscopy with a magnification (b).
The side surface profile (a) and the cross section image (b) of a standard single-mode fiber obtained by LIAIM. In (a), the solid squares are the depth data derived from LIAIM measurement (the upper image) and the solid line is a calculated curve of the fiber surface, and the darkened portion of the cross section of the fiber at the upper-right corner marks the actually scanned section. At the upper right of (b) is the zoom-in view of the core area.
The micrographs of a portion of the mulberry leaf surface. (a) Image obtained by the laser-induced air ionization microscopy (LIAIM) with scan steps. (b) Image of the same sample area obtained by Olympus BX51 microscope with magnification.
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