3D imaging of gems and minerals by multiphoton microscopy

Benjamin Cromey, Ryan J. Knox, Khanh Kieu

Research output: Contribution to journalArticle

1 Scopus citations

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

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials

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