Quantifying selective alignment of ensemble nitrogen-vacancy centers in (111) diamond
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-11-09 |
| Journal | Applied Physics Letters |
| Authors | Kosuke Tahara, Hayato Ozawa, Takayuki Iwasaki, Norikazu Mizuochi, Mutsuko Hatano |
| Institutions | Tokyo Institute of Technology, The University of Osaka |
| Citations | 36 |
Abstract
Section titled āAbstractāSelective alignment of nitrogen-vacancy (NV) centers in diamond is an important technique towards its applications. Quantification of the alignment ratio is necessary to design the optimized diamond samples. However, this is not a straightforward problem for dense ensemble of the NV centers. We estimate the alignment ratio of ensemble NV centers along the [111] direction in (111) diamond by optically detected magnetic resonance measurements. Diamond films deposited by N2 doped chemical vapor deposition have NV center densities over 1 Ć 1015 cmā3 and alignment ratios over 75%. Although spin coherence time (T2) is limited to a few Ī¼s by electron spins of nitrogen impurities, the combination of the selective alignment and the high density can be a possible way to optimize NV-containing diamond samples for the sensing applications.