IP Library › Granted Patent US 9,835,693
Granted Patent B2
US 9,835,693 · App. 15/003,256 · Granted Dec 5, 2017

Higher magnetic sensitivity through fluorescence manipulation by phonon spectrum control

Inventors: David N. Coar (Cherry Hill, NJ); Jeff D. Cammerata (Medford Lakes, NJ)
Assignee: Lockheed Martin Corporation
G01R33/032
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Quick Facts
Patent No.
US 9,835,693
App. No.
15/003,256
Granted
Dec 5, 2017
Kind
B2
Abstract

Methods and configuration are disclosed for providing higher magnetic sensitivity magnetometers through fluorescence manipulation by phonon spectrum control. A method for increasing the magnetic sensitivity for a DNV sensor may include providing a diamond having nitrogen vacancies of a DNV sensor and an acoustic driver and acoustically driving the diamond with the acoustic driver to manipulate a phonon spectrum of the DNV sensor. A DNV sensor may include a diamond having nitrogen vacancies, a photo detector configured to detect photon emissions from the diamond responsive to laser excitation of the diamond and an acoustic driver configured to manipulate a phonon spectrum for the DNV sensor by acoustically driving the diamond.

Claims (39)

1. A method for increasing magnetic sensitivity for a diamond nitrogen vacancy (DNV) sensor comprising:

providing a diamond having nitrogen vacancies of the DNV sensor and an acoustic driver;

acoustically driving the diamond with the acoustic driver to manipulate a phonon spectrum for the DNV sensor; and

detecting, using a photo detector, a set of NV 0 photon emissions and a set of NV − photon emissions from the DNA sensor, the set of NV 0 photon emissions and set of NV − photon emissions having a wavelength difference between a peak of the set of NV 31 photon emissions and a peak of the set of NV − photon emissions based on the acoustic driving of the diamond.

2. The method of claim 1 , wherein the acoustic driver acoustically drives the diamond parallel to the nitrogen vacancies of a lattice of the diamond.

3. The method of claim 1 , wherein the acoustic driver is a piezoelectric acoustic driver.

4. The method of claim 1 further comprising:

applying a long pass filter to filter NV 0 photon emissions from NV − photon emissions.

5. The method of claim 1 further comprising:

modifying a shape of the diamond to manipulate the phonon spectrum based on resonance of the diamond from the shape.

6. The method of claim 1 further comprising:

matching an optical drive of the DNV sensor with a NV 0 zero phonon line.

7. The method of claim 1 further comprising:

filtering out the set of NV 0 photon emissions.

8. A diamond nitrogen-vacancy (DNV) sensor comprising:

a diamond having nitrogen vacancies;

a photo detector configured to detect photon emissions from the diamond responsive to laser excitation of the diamond; and

an acoustic driver configured to manipulate a phonon spectrum for the DNV sensor by acoustically driving the diamond,

wherein the photo detector detects a set of NV 0 photon emissions and a set of NV − photon emissions having a wavelength difference between a peak of the set of NV 0 photon emissions and a peak of the set of NV − photon emissions based on the acoustic driving of the diamond by the acoustic driver.

9. The DNV sensor of claim 8 , wherein the acoustic driver acoustically drives the diamond parallel to the nitrogen vacancies of a lattice of the diamond.

10. The DNV sensor of claim 8 , wherein the acoustic driver is a piezoelectric acoustic driver.

11. The DNV sensor of claim 8 further comprising:

a long pass filter to filter NV 0 photon emissions from NV − photon emissions detected by the photo detector.

12. The DNV sensor of claim 8 , wherein the diamond is formed to manipulate the phonon spectrum based on resonance of the diamond.

13. The DNV sensor of claim 8 further comprising:

a filter to filter out the set of NV 0 photon emissions.

14. The DNV sensor of claim 13 , wherein the filter is incorporated into the photo detector.

15. A diamond nitrogen-vacancy (DNV) sensor comprising:

a diamond having nitrogen vacancies along a plurality of lattices, the diamond shaped to manipulate the phonon spectrum based on resonance of the diamond for the plurality of lattices;

a photo detector configured to detect photon emissions from the diamond responsive to laser excitation of the diamond; and

an acoustic driver configured to manipulate a phonon spectrum for the I)NV sensor by acoustically driving the diamond,

wherein the photo detector detects a set of NV 0 photon emissions and a set of NV − photon emissions having a wavelength difference between a peak of the set of NV 0 photon emissions and a peak of the set of NV − photon emissions based on the acoustic driving of the diamond by the acoustic driver.

16. The DNV sensor of claim 15 , wherein the acoustic driver acoustically drives the diamond parallel to the nitrogen vacancies of a lattice of the diamond.

17. The DNV sensor of claim 15 , wherein the acoustic driver is a piezoelectric acoustic driver.

18. The DNV sensor of claim 15 further comprising:

a long pass filter to filter NV 0 photon emissions from NV − photon emissions detected by the photo detector.

19. The DNV sensor of claim 15 further comprising:

a filter to filter out the set of NV 0 photon emissions.

20. The DNV sensor of claim 19 , wherein the filter is incorporated into the photo detector.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 12, 2017
From: COAR, DAVID N.; CAMMERATA, JEFF D.
To: LOCKHEED MARTIN CORPORATION
Reel/Frame 043564/0541 →
Continuity (1)
Related Publication 20170212177A1 · Jul 27, 2017