LIGHT COLLECTION FROM DNV SENSORS

• US 20170023487A1
• Filed: 01/21/2016
• Published: 01/26/2017
• Est. Priority Date: 07/23/2015
• Status: Abandoned Application

• Current Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Original Assignee: Lockheed Martin Corporation (Martin Marietta Corporation)
• Inventors: Boesch, Brian P.
• Application Number:
  US15/003,062
• Publication Number:
  US 20170023487A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G01N 2021/6469 Cavity, e.g. ellipsoid
• CPC Class Codes: G01N 21/55 Specular reflectivity
• CPC Class Codes: G01N 21/87 Investigating jewels G01N21/88 takes precedence
• CPC Class Codes: G01N 2201/06113 Coherent sources; lasers
• CPC Class Codes: G01N 2201/0637 Elliptic
• CPC Class Codes: G01N 2201/068 Optics, miscellaneous
• CPC Class Codes: G01R 33/032 using magneto-optic devices, e.g. Faraday or Cotton-Mouton effect
• CPC Class Codes: G01R 33/1284 Spin resolved measurements; Influencing spins during measurements, e.g. in spintronics devices G01R33/093 takes precedence; semiconductor devices using spin polarized carriers H01L29/66984
• CPC Class Codes: G01R 33/26 using optical pumping
• CPC Class Codes: G01R 33/60 using electron paramagnetic resonance G01R33/24, G01R33/62 take precedence

Abstract

Methods and configurations are disclosed for an efficient collection of fluorescence emitted by the nitrogen vacancies of a diamond of a DNV sensor. Some implementations may include a diamond having a nitrogen vacancy and a reflector positioned about the diamond to reflect a portion of light emitted from the diamond. In some implementations the reflector may be parabolic or ellipsoidal. In some implementations, DNV sensor may have a reflector and a concentrator. Other implementations may include a diamond with a nitrogen vacancy and a reflector positioned about the diamond to reflect a portion of light emitted from the diamond using a dielectric mirror film applied to the reflector. Still other implementations may have a diamond with a nitrogen vacancy and a dielectric mirror film coated on the diamond.

Claims

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

a diamond having a nitrogen vacancy; and

a reflector positioned about the diamond to reflect a portion of light emitted from the diamond.

2. The DNV sensor of claim 1 further comprising:

a photo detector to measure the portion of light emitted from the diamond.

3. The DNV sensor of claim 2, wherein the photo detector is sealed to a portion of the reflector.

4. The DNV sensor of claim 2, wherein the reflector is parabolic.

5. The DNV sensor of claim 2, wherein the reflector is ellipsoidal.

6. The DNV sensor of claim 5, wherein the diamond is positioned at a first focus of the reflector and the photo detector is positioned at a second focus of the reflector.

7. The DNV sensor of claim 2 further comprising:

an optical filter coupled to the photo detector.

8. The DNV sensor of claim 7, wherein the optical filter is a red filter.

9. The DNV sensor of claim 1, wherein the reflector comprises an opening for an excitation laser beam to excite the diamond.

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

a diamond having a nitrogen vacancy; and

a parabolic reflector positioned about the diamond to reflect a portion of light emitted from the diamond.

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

a diamond having a nitrogen vacancy; and

a ellipsoidal reflector positioned about the diamond to reflect a portion of light emitted from the diamond.

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

a diamond having a nitrogen vacancy;

a reflector positioned about the diamond to reflect a portion of light emitted from the diamond; and

a concentrator coupled to the reflector and configured to concentrate the reflected portion of light.

13. The DNV sensor of claim 12 further comprising:

a photo detector coupled to the concentrator and configured to measure the concentrated portion of light.

14. The DNV sensor of claim 13, wherein the photo detector is sealed to a portion of the concentrator.

15. The DNV sensor of claim 13, wherein the reflector is parabolic.

16. The DNV sensor of claim 13, wherein the reflector is ellipsoidal.

17. The DNV sensor of claim 13, wherein the diamond is positioned at a first focus of the reflector and the photo detector is positioned at a second focus of the concentrator.

18. The DNV sensor of claim 13 further comprising:

an optical filter coupled to the photo detector.

19. The DNV sensor of claim 18, wherein the optical filter is a red filter.

20. The DNV sensor of claim 12, wherein the concentrator comprises an opening for an excitation laser beam to excite the diamond.

21. The DNV sensor of claim 20, wherein the opening is proximate to the photo detector.

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

a diamond having a nitrogen vacancy; and

a reflector positioned about the diamond to reflect a portion of light emitted from the diamond, the reflector comprising a dielectric mirror film.

23. The DNV sensor of claim 22, wherein the dielectric mirror film reflects only red light.

24. The DNV sensor of claim 22, wherein the dielectric mirror film permits transmission of green light through the dielectric mirror film.

25. The DNV sensor of claim 22 further comprising:

a photo detector coupled to the reflector and configured to measure the reflected portion of light.

26. The DNV sensor of claim 25, wherein the photo detector is sealed to a portion of the reflector.

27. The DNV sensor of claim 25 further comprising:

an optical filter coupled to the photo detector.

28. The DNV sensor of claim 27, wherein the optical filter is a red filter.

29. The DNV sensor of claim 22, wherein the reflector is parabolic.

30. The DNV sensor of claim 22, wherein the reflector is ellipsoidal.

31. The DNV sensor of claim 22, wherein the reflector comprises a substrate, the dielectric mirror film being applied to the substrate.

32. The DNV sensor of claim 31, wherein the substrate possesses a high clarity at a frequency of interest for the DNV sensor.

33. The DNV sensor of claim 31, wherein the substrate is one of a plastic, glass, diamond, or quartz.

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

a diamond having a nitrogen vacancy; and

a dielectric mirror film coated on the diamond.

35. The DNV sensor of claim 34, wherein the dielectric mirror film reflects only red light.

36. The DNV sensor of claim 34, wherein the dielectric mirror film permits transmission of green light through the dielectric mirror film.

37. The DNV sensor of claim 34 further comprising:

a photo detector coupled to the diamond and configured to measure a reflected portion of light.

38. The DNV sensor of claim 37, wherein the photo detector is sealed to a portion of the diamond.

39. The DNV sensor of claim 37 further comprising:

an optical filter coupled to the photo detector.

40. The DNV sensor of claim 39, wherein the optical filter is a red filter.

41. The DNV sensor of claim 34 further comprising:

a fiber conveying green light to the diamond.

42. The DNV sensor of claim 34 further comprising:

a microwave coil coiled about a portion of the diamond.

43. The DNV sensor of claim 34, wherein the diamond is parabolic in shape.

44. The DNV sensor of claim 34, wherein the diamond is ellipsoidal in shape.

45. A method for constructing a DNV sensor, the method comprising:

providing a diamond having a nitrogen vacancy; and

applying a dielectric mirror film coat to a portion of the diamond.

46. The method of claim 45 further comprising:

machining a portion of the diamond into a parabolic shape.

47. The method of claim 45 further comprising:

machining a portion of the diamond into an ellipsoidal shape.

48. The method of claim 45 further comprising:

positioning a photo detector relative to the diamond to receive light emitted from the diamond.

49. The method of claim 45, wherein a layer of the diamond does not have nitrogen vacancies.

50. A method for constructing a DNV sensor, the method comprising:

providing a diamond having a nitrogen vacancy;

machining a portion of the diamond to form a reflector; and

positioning a photo detector relative to the diamond to receive light emitted from the diamond.

51. The method of claim 50 further comprising:

applying a dielectric mirror film coat to a portion of the diamond.

52. The method of claim 50, wherein a layer of the diamond does not have nitrogen vacancies.

53. The method of claim 50, wherein a portion of the diamond is machined into a parabolic shape.

54. The method of claim 50, wherein a portion of the diamond is machined into an ellipsoidal shape.

55. A method for constructing a DNV sensor, the method comprising:

providing a diamond having a nitrogen vacancy and a reflector; and

positioning the diamond within the reflector such that the reflector reflects a portion of light from the diamond.

56. The method of claim 55 further comprising:

positioning a photo detector relative to the diamond to receive light reflected by the reflector.

57. The method of claim 55, wherein the reflector is monolithic.

58. The method of claim 57, wherein the diamond is positioned within a borehole of the monolithic reflector.

59. The method of claim 58, wherein the borehole is backfilled.

60. The method of claim 57, wherein the reflector comprises two or more pieces, wherein positioning the diamond within the reflector comprises inserting the diamond between the two or more pieces.

61. The method of claim 60, wherein the diamond is substantially flat.

62. The method of claim 60, wherein the two or more pieces of the reflector are parabolic in shape.

63. The method of claim 62, wherein the diamond is positioned parallel to an axis of symmetry of the reflector.

64. The method of claim 62, wherein the diamond is positioned perpendicular to an axis of symmetry of the reflector.

65. The method of claim 60, wherein the two or more pieces of the reflector are ellipsoidal in shape.

66. The method of claim 65, wherein the diamond is positioned along a major axis of the reflector.

67. The method of claim 65, wherein the diamond is positioned along a minor axis of the reflector.

68. The method of claim 57, wherein positioning the diamond within the reflector comprises casting the reflector about the diamond.

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

a diamond having a nitrogen vacancy;

a reflector positioned about the diamond to reflect a portion of light emitted from the diamond; and

a waveguide positioned within the reflector to direct light to the diamond.

70. The DNV sensor of claim 69 further comprising:

a photo detector to measure the portion of light emitted from the diamond.

71. The DNV sensor of claim 70, wherein the photo detector is sealed to a portion of the reflector.

72. The DNV sensor of claim 70 further comprising:

an emitter to emit light to excite the nitrogen vacancy of the diamond, the emitter positioned at a first end of the waveguide, the diamond positioned at a second end of the waveguide.

73. The DNV sensor of claim 72, wherein the emitter is positioned within the photo detector.

74. The DNV sensor of claim 73, wherein the emitter is positioned at a center of the photo detector.

75. The DNV sensor of claim 72, wherein the photo detector and emitter are positioned on a substrate.

76. The DNV sensor of claim 75, wherein the photo detector and emitter positioned on the substrate form a single chip.

77. The DNV sensor of claim 72 further comprising:

an optical filter coupled to the photo detector.

78. The DNV sensor of claim 77, wherein the optical filter is a red filter.

79. The DNV sensor of claim 69, wherein the reflector is parabolic.

80. The DNV sensor of claim 79, wherein the waveguide is positioned parallel to an axis of symmetry of the reflector.

81. The DNV sensor of claim 69, wherein the reflector is ellipsoidal.

82. The DNV sensor of claim 81, wherein the waveguide is positioned parallel to a major axis of the reflector.