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Depletion of nitrogen‐vacancy color centers in diamond via hydrogen passivation
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Fluorescent emission map in a 100 μm2 area for 7 different depths below the sample surface in wavelength band 650–750 nm for the sample (a) as received and (b) post hydrogen‐plasma. The number above each panel shows the depth below the sample surface in microns, and the scale bar shows the detected Counts/s.

Image of FIG. 2.
FIG. 2.

(Color online) NV density for as‐received sample measured by integrating the fluorescence over 100 μm2 (red triangles at 8 points below the diamond surface) and establishing the (∼20 kCounts/s) contribution from each emitter and estimating the confocal volume. The surface fluorescence was ignored for the as‐received sample as it is dominated by surface damage and other non‐NV sources. Hydrogen treated sample NV density integrated over 100 μm2 (blue dots) at 7 points below the diamond surface. Background corresponds to 3.5 kCounts/s.

Image of FIG. 3.
FIG. 3.

(Color online) NV density measured by integrating over a 100 μm2 area for a second sample as‐received (circles) and then hydrogen plasma treated at progressively higher temperatures of 700 °C (squares), 800 °C (diamonds), and 900 °C (triangles). The surface of this sample was particularly badly scratched and thus exhibited strong non‐NV fluorescence (data not shown).


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Depletion of nitrogen‐vacancy color centers in diamond via hydrogen passivation