Spectral control of nanodiamond using dressed photon-phonon etching

Our paper was published in Appl. Phys. A

R. Nagumo, F. Brandenburg, A. Ermakova, F. Jelezko, and T. Yatsui, “Spectral control of nanodiamond using dressed photon-phonon etching,” Applied Physics A, Volume 121, Issue 4, December 2015, pp 1389-1394, DOI: 10.1007/s00339-015-9400-0

[Significance of this article]

We have examined the properties of Dressed-Photon-Phonon (DPP) etching and the application of DPP to improving of the luminescence of the NV centers in nanodiamonds (NDs). We found that the size of the ND decreases, while the height of a particle remains unchanged, which we believe can be attributed to the localized electrons at the side of an ND, which enhances the DPP etching. We also confirm the DPP etching of the NDs, and the enhancement of the NV luminescence. This is a result of the removal of the surface defects which act as nonluminous traps.