3D imaging of gems and minerals by multiphoton microscopy

Benjamin Cromey, Ryan J. Knox, Khanh Q Kieu

Research output: Contribution to journalArticle

Abstract

Many optical approaches have been used to examine the composition and structure of gemstones, both recently and throughout history. The nonlinear optical behavior of different gemstones has not been investigated, and the higher order terms to the refractive index represent an unused tool for qualifying and examining a stone. We have used a multiphoton microscope to examine the nonlinear optical properties of 36 different gemstones and demonstrate that it is a useful tool for imaging them three-dimensionally up to the millimeter scale below the sample surface. The polarization dependence of second harmonic generation signals was used to examine the crystal orientations inside the minerals.

Original languageEnglish (US)
Pages (from-to)516-525
Number of pages10
JournalOptical Materials Express
Volume9
Issue number2
DOIs
StatePublished - Feb 1 2019

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Gems
Minerals
Microscopic examination
Imaging techniques
Harmonic generation
Crystal orientation
Refractive index
Microscopes
Optical properties
Polarization
Chemical analysis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

Cite this

3D imaging of gems and minerals by multiphoton microscopy. / Cromey, Benjamin; Knox, Ryan J.; Kieu, Khanh Q.

In: Optical Materials Express, Vol. 9, No. 2, 01.02.2019, p. 516-525.

Research output: Contribution to journalArticle

Cromey, Benjamin ; Knox, Ryan J. ; Kieu, Khanh Q. / 3D imaging of gems and minerals by multiphoton microscopy. In: Optical Materials Express. 2019 ; Vol. 9, No. 2. pp. 516-525.
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