Birefringence Microscopy of Unit Dislocations in Diamond

Hoa, Le Thi Mai; Ouisse, T.; Chaussende, Didier; Naamoun, Mehdi; Tallaire, Alexandre; Achard, Jocelyn

doi:10.1021/cg5010193

Cited by 43 publications

(26 citation statements)

References 27 publications

(66 reference statements)

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“…Here we compare NV stress imaging to birefringence imaging, which is a prominent characterization tool in the diamond community [11,21]. In this work, both methods were implemented within the same optical microscope for a straightforward comparison ( Fig.…”

Section: Comparison With Birefringence Imagingmentioning

confidence: 99%

Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers

et al. 2019

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We present a micrometer-resolution millimeter-field-of-view stress imaging method for diamonds containing a thin surface layer of nitrogen vacancy (NV) centers. In this method, we reconstruct stress tensor elements over a two-dimensional field of view from NV optically-detected magnetic resonance (ODMR) spectra. We use this technique to study how stress inhomogeneity affects NV magnetometry performance, and show how NV stress imaging is a useful and direct way to assess these effects. This new tool for mapping stress in diamond will aid optimization of NV-diamond sensing, with wide-ranging applications in the physical and life sciences.

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Section: Comparison With Birefringence Imagingmentioning

confidence: 99%

Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers

et al. 2019

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“…The strain induces a change in the refractive index of diamond and the appearance of birefringence. Even though a quantitative analysis is hardly achievable [100], this method reveals dislocations ( Figure 11b) and therefore dislocation-free regions can be easily preselected. The homogeneity of the diamond sample (in terms of these defects) is easily made visible with this non-invasive and fast method.…”

Section: Diamond Homogeneity -Cross-polarisation Analysismentioning

confidence: 99%

Screening and engineering of colour centres in diamond

Lühmann¹,

Raatz²,

John³

et al. 2018

J. Phys. D: Appl. Phys.

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We present a high throughput and systematic method for screening of colour centres in diamond. We aim at the search and reproducible creation of new optical centres, down to the single level, potentially of interest for the wide range of diamond-based quantum applications. The screening method presented here should moreover help identifying some already indexed defects among hundreds in diamond [1] but also some promising defects of still unknown nature, such as the recently discovered ST1 centre [2,3]. We use ion implantation in a systematic manner to implant several chemical elements. Ion implantation has the advantage to address single atoms inside the bulk with defined depth and high lateral resolution, but the disadvantage of defect production such as vacancies. The sample is annealed in vacuum at different temperatures (between 600°C and 1600°C with 200°C steps) and fully characterised at each step in order to follow the evolution of the defects: formation, dissociation, diffusion, reformation and charge state, at the ensemble level and, if possible, at the single centre level. We review the unavoidable ion implantation defects (with the example of the GR1 and 3H centres), discuss ion channeling and thermal annealing and estimate the diffusion of vacancies, nitrogen and hydrogen. We use different characterisation methods best suited for our study (from widefield fluorescence down to sub-diffraction optical imaging of single centres) and discuss reproducibility issues due to diamond and defect inhomogeneities. Nitrogen is also implanted as a reference, taking advantage of the large knowledge on NV centres as a versatile sensor in order to retrieve or deduce the conditions and local environment in which the different implanted chemical elements are embedded. We show here the preliminary promising results of a long-term study and focus on the elements O, Mg, Ca, F and P, from which fluorescent centres were found.

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“…The NV-based strain imaging technique introduced in this work reaches the optical diffraction limit and a high sensitivity of 10 −5 Hz 1 2 -(<10 MPa), which outperforms more traditional strain imaging techniques such as Raman imaging [12] that are limited to absolute sensitivities >10 MPa in addition to being orders of magnitude slower [27]. Through sectional imaging, this 3D imaging technique also offers an advantage over birefringence [28,29] or x-ray topography [30] strain imaging methods, which image whole-sample and near-surface strains, respectively. Although limited to diamond and other materials with optically accessible, strain-sensitive spin defects (e.g.…”

Section: Discussionmentioning

confidence: 92%

Wide-field strain imaging with preferentially aligned nitrogen-vacancy centers in polycrystalline diamond

Trusheim¹,

Englund²

2016

New J. Phys.

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We report on wide-field optically detected magnetic resonance imaging of nitrogen-vacancy centers (NVs) in type IIa polycrystalline diamond. These studies reveal a heterogeneous crystalline environment that produces a varied density of NV centers, including preferential orientation within some individual crystal grains, but preserves long spin coherence times. Using the native NVs as nanoscale sensors, we introduce a three-dimensional strain imaging technique with high sensitivity ( 10 5 < -Hz -1/2 ) and diffraction-limited resolution across a wide field of view.

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Birefringence Microscopy of Unit Dislocations in Diamond

Cited by 43 publications

References 27 publications

Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers

Imaging crystal stress in diamond using ensembles of nitrogen-vacancy centers

Screening and engineering of colour centres in diamond

Wide-field strain imaging with preferentially aligned nitrogen-vacancy centers in polycrystalline diamond

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