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Ultrafast time-resolved spectroscopy of nanowires
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View: Figures


Image of FIG. 1.
FIG. 1.

SEM images of the NWs grown at on 0.5 nm Au/quartz.

Image of FIG. 2.
FIG. 2.

X-ray diffraction pattern of the NWs grown on quartz.

Image of FIG. 3.
FIG. 3.

Optical transmission spectrum of NWs on quartz. The inset shows the square of the absorption vs the energy providing an estimate for the bandgap of the NWs.

Image of FIG. 4.
FIG. 4.

Nondegenerate, time-resolved, transient absorption measurements of the NWs using ultrafast excitation pulses at 320 nm and probing pulses in the range of 340–980 nm.

Image of FIG. 5.
FIG. 5.

Reflection change is shown for times greater than 50 ps and probing wavelengths between (a) 600–700 and 390–430 nm, in the inset of Fig. 5(a), and (b) 490–550 nm. The period of oscillations is presented in the inset of Fig. 5(b) as a function of probing wavelength.

Image of FIG. 6.
FIG. 6.

Time resolved transient normalized absorption measurements of the NWs on quartz using ultrafast UV excitation pumping pulses at 320 nm and probing pulses at (a) 350 nm and (b) 980 nm for different absorbed fluences.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultrafast time-resolved spectroscopy of In2O3 nanowires