Super resolution and fast surface B-field imaging using an NV-diamond
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorYuan-Yu Jau
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Abstract
The present invention is directed to devices and systems for rapidly producing high resolution images of magnetic fields in a sample. The devices and systems employ diamond chips with color centers that fluoresce in the presence of magnetic fields. The high resolution is due to the use of one of three excitation methods. The first method employs modulation of an acoustic surface wave, which increases/decreases the sensitivity of the color centers to magnetic fields. The second and third methods employ arrays of magnetic field coils and electrode pairs, respectively, which again increase/decrease the sensitivity of the color centers to magnetic fields. The color centers are preferably nitrogen vacancies in the diamond chips.
Claims13
A magnetic field imaging system, comprising:
- a pump laser adapted to emit a pumping light beam having a pumping light beam wavelength;
- a diamond chip, the diamond chip including:
- a plurality of color centers, the plurality of color centers adapted to fluoresce in response to the pumping light beam and a magnetic field thereby creating fluorescence light;
- and
- means for modulating a sensitivity of the plurality of color centers to the magnetic field, the sensitivity being modulated in two orthogonal directions, the means for modulating including two or more acoustic modulators, each acoustic modulator adapted to generate a corresponding acoustic standing wave in the diamond chip;
- a photodetector adapted to receive the fluorescence light and to produce data corresponding to the fluorescence light;
- and
- a signal processor adapted to receive the data and to convert the data into a corresponding magnetic-field image.
Dependencies are inferred from the claim text.