Growth and characterization of the chalcopyrite LiGaTe2: A highly non-linear birefringent optical crystal for the mid-infrared

V. Petrov, L. Isaenko, A. Yelisseyev, P. Krinitsin, V. Vedenyapin, A. Merkulov, J. J. Zondy

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)


LiGaTe2 crystals have been grown by the Bridgman-Stockbarger technique. The clear transparency range of LiGaTe2 extends from 2.5 to 12 μm and its band-gap at room temperature is at 2.41 eV (515 nm). LiGaTe2 is a positive uniaxial crystal which possesses sufficient birefringence for phase-matching. Its non-linear coefficient d36 estimated by phase-matched second harmonic generation is 43 pm/V ± 10% at 4.5 μm. The properties of LiGaTe2 are compared to those of other mid-IR chalcopyrite non-linear optical crystals with special emphasis on the frequency doubling potential for CO2 lasers operating at 10.6 μm.

Original languageEnglish
Pages (from-to)2434-2438
Number of pages5
JournalJournal of Non-Crystalline Solids
Issue number23-25
Publication statusPublished - Jul 15 2006
Externally publishedYes


  • Crystal growth
  • Non-linear optics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry

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