Higher magnetic sensitivity through fluorescence manipulation by phonon spectrum control

• US 9,835,693 B2
• Filed: 01/21/2016
• Issued: 12/05/2017
• Est. Priority Date: 01/21/2016
• Status: Active Grant

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Coar, David N., Cammerata, Jeff D.
• Primary Examiner(s): Astacio-Oquendo, Giovanni
• Application Number:
  US15/003,256
• Publication Number:
  US 20170212177A1
• Time in Patent Office: 684 Days
• Field of Search: 3242441, 324200, 324244
• CPC Class Codes: G01H 1/00 Measuring characteristics of vibrations in solids by using direct conduction to the detector G01H9/00, G01H11/00 take precedence
• CPC Class Codes: G01H 9/00 Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
• CPC Class Codes: G01R 33/032 using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect

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

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 NV⁰ photon emissions and a set of NV⁻

photon emissions from the DNA sensor, the set of NV⁰ photon emissions and set of NV⁻

photon emissions having a wavelength difference between a peak of the set of NV³¹ 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 NV⁰ 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 NV⁰ zero phonon line.

7. The method of claim 1 further comprising:

filtering out the set of NV⁰ 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 NV⁰ photon emissions and a set of NV⁻

photon emissions having a wavelength difference between a peak of the set of NV⁰ 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 NV⁰ 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 NV⁰ 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 NV⁰ photon emissions and a set of NV⁻

photon emissions having a wavelength difference between a peak of the set of NV⁰ 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 NV⁰ 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 NV⁰ photon emissions.

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