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Experimental setup: L1–L5 are biconvex lenses. BS is a beam splitter. Pd1 and Pd2 are photodiodes. Ch is a chopper.
Normalized Kerr shutter signals for (solid squares) and the lead-germanium film (solid circles). The inset shows the Kerr shutter signal for the film in an expanded scale.
Time evolution of the TM EZ-scan signal at pre- and postfocal positions. (a) Liquid . (b) Lead-germanium film.
TM-EZ scan profile for the lead-germanium film. (a) NL refractive signal . (b) NL absorption signal .
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