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Multidimensional luminescence microscope for imaging defect colour centres in diamond.

Daniel C Jones1,2,3,4, Sunil Kumar1,2,3,4, Peter M P Lanigan1,2,3,4

  • 1Photonics Group, Imperial College London, London SW7 2AZ, United Kingdom.

Methods and Applications in Fluorescence
|October 18, 2019
PubMed
Summary
This summary is machine-generated.

We developed a new microscope for studying diamond defects using hyperspectral and time-resolved imaging. This advanced technique reveals subtle defects like nitrogen and silicon vacancies in diamonds, offering enhanced contrast beyond traditional methods.

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Area of Science:

  • Materials Science
  • Optics
  • Solid-State Physics

Background:

  • Luminescent diamond defects are crucial for quantum technologies.
  • Characterizing these defects often requires advanced imaging techniques.
  • Existing methods may not fully reveal subtle defect properties.

Purpose of the Study:

  • To introduce a novel multidimensional luminescence microscope.
  • To showcase its capability in characterizing luminescent diamond defects.
  • To demonstrate enhanced defect detection using hyperspectral and time-resolved imaging.

Main Methods:

  • Development of a multidimensional luminescence microscope.
  • Integration of hyperspectral imaging and time-resolved luminescence lifetime imaging.
  • Inclusion of crossed-polariser white light transmission microscopy for strain analysis.
  • Application to natural and synthetic diamond samples.

Main Results:

  • Successful detection of various diamond defects, including N3, nitrogen, and silicon vacancies.
  • Hyperspectral imaging provided contrast invisible in conventional intensity images.
  • Luminescence lifetime imaging offered additional, distinct contrast mechanisms.
  • Birefringence indicating strain was detectable.

Conclusions:

  • The developed microscope offers a powerful tool for detailed diamond defect analysis.
  • Multidimensional luminescence imaging significantly enhances defect characterization.
  • This technique is valuable for both natural and synthetic diamond studies.