High-resolution 3D imaging of diamonds with multiphoton microscopy

Area of Science:

• Materials Science
• Optical Physics
• Geoscience

Background:

• Diamonds possess unique optical, chemical, electrical, mechanical, and thermal properties.
• These properties drive demand in optical technology, gemology, and geological studies.
• Nondestructive, rapid analysis techniques are crucial for natural and synthetic diamonds.

Purpose of the Study:

• To demonstrate sub-micrometer, 3D imaging and spectral analysis of diamonds.
• To utilize multiphoton microscopy (MPM) for diamond characterization.
• To explore MPM's capability in assessing gemstone quality and provenance.

Main Methods:

• Multiphoton microscopy (MPM) was employed for imaging and spectral analysis.
• The technique stimulates nonlinear optical emissions for internal visualization.
• Sub-micrometer resolution was achieved for detailed structural analysis.

Main Results:

• MPM enabled nondestructive, three-dimensional imaging of diamond interiors.
• Spectral analysis provided insights into fluorescent defects and inclusions.
• The method successfully visualized internal structures and potential formational indicators.

Conclusions:

• MPM is a powerful tool for analyzing diamonds nondestructively.
• This technique offers valuable information for gemstone quality assessment.
• MPM can identify vacancy centers for quantum applications and trace gemstone origins.