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Ion implantation induced modification of optical properties in single-crystal diamond studied by coherent acoustic phonon spectroscopy
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10.1063/1.4765647
/content/aip/journal/apl/101/18/10.1063/1.4765647
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/18/10.1063/1.4765647
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Typical pump-probe reflectivity responses for implanted (solid) and unimplanted (dotted) diamonds, vertically offset for clarity. Data are relevant to a sample implanted at a fluence of 3 × 1015 cm–2. Inset: CAP experiment configuration showing strain-wave induced self-interference in the probe reflectivity. The CAP wave is generated by the optical pump (not shown).

Image of FIG. 2.
FIG. 2.

CAP oscillations in the pump-probe reflectivity signal of ion-implanted diamond specimens at multiple fluences (dark lines). The dotted line behind each curve is the corresponding response for an unimplanted specimen. Above the CAP responses are the TEM cross-section for the 3 × 1016 cm–2 specimen (bright field, two-beam diffraction, g = (220)) and the damage-induced vacancy distribution as calculated by the TRIM code. The vertical bar indicates the full width at half maximum of the TRIM vacancy profile.

Image of FIG. 3.
FIG. 3.

Variations in CAP oscillation features with He+ implantation fluence. (a) TRIM vacancy concentrations for the initial node and peak of the out-of-phase “pulse” feature. The lines at 1.6 × 1021 cm–3 (dotted) and CV node  = 3.9 × 1020 cm–3 (dashed) are the respective average vacancy concentrations for the peaks and nodes. (b) Cumulative phase shift resulting from the damage-induced increase in the real index, n. The line is a guide to the eye. (c) Amplitude of the oscillations beyond the damage layer as a fraction of the oscillation amplitude before the out-of-phase behavior. The line is a linear fit to the data.

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/content/aip/journal/apl/101/18/10.1063/1.4765647
2012-11-01
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ion implantation induced modification of optical properties in single-crystal diamond studied by coherent acoustic phonon spectroscopy
http://aip.metastore.ingenta.com/content/aip/journal/apl/101/18/10.1063/1.4765647
10.1063/1.4765647
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