1. Nonblinking green emission from single H3 color centers in nanodiamonds
- Author
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Kai-Lin Yang, Huan-Cheng Chang, Jui-Hung Hsu, Wei-De Su, and Yan-Kai Tzeng
- Subjects
Photon ,Photon antibunching ,Photoluminescence ,Physics and Astronomy (miscellaneous) ,Chemistry ,Metastability ,engineering ,Diamond ,engineering.material ,Atomic physics ,Fluorescence ,Molecular electronic transition ,Spectral line - Abstract
This work investigates the emission properties of single color centers in natural diamond nanoparticles for potential use as single photon sources and photostable biomarkers. Two emitters, H3 and H4, were identified by their sharp zero-phonon lines at 503 nm and 496 nm, respectively, in the photoluminescence spectra. Using a modified Hanbury Brown and Twiss setup, we observed complete photon antibunching for the H3 center. No fluorescence blinking was detected for a single H3 emitter on the ms timescale, indicating weak coupling between the electronic transition A11↔B11 and adjacent metastable states of this nitrogen-vacancy-nitrogen point defect.
- Published
- 2011
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