Super resolution and fast surface B-field imaging using an NV-diamond
| DWPI Title: Magnetic field imaging system for producing high resolution images of magnetic fields in a sample, comprises: pump laser, diamond chip including multiple color centers, acoustic modulators, a photodetector and signal processor |
| 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. |
| Use: Magnetic field imaging system for producing high resolution images of magnetic fields in a sample. |
| Advantage: The system is rapid to produces high resolution images; achieves fast B-field imaging with super resolution via efficiently switching ON/OFF the NV-centers at the desired times and locations on the chip; improves imaging resolution and photon collection efficiency of the B-field sensitive fluorescence signals; employs pump laser that adapts to emit a pumping light beam having a pumping light beam wavelength; a diamond chip including: a multiple color centers that adapts to fluoresce in response to the pumping light beam and a magnetic field and creating fluorescence light, acoustic modulators that modulates a sensitivity of the multiple color centers to the magnetic field, the sensitivity being modulated in two orthogonal directions, each acoustic modulator adapts to generate a corresponding acoustic standing wave in the diamond chip; a photodetector that adapts to receive the fluorescence light and to produces data corresponding to the fluorescence light; and a signal processor adapts to receive the data and to convert the data into a corresponding magnetic-field image. |
| Novelty: Magnetic field imaging system, comprises: a pump laser, a diamond chip including a multiple color centers, two or more acoustic modulators, a photodetector and a signal processor. |
| Filed: 9/6/2023 |
| Application Number: US18242916A |
| Tech ID: SD 16027.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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