Updated thermo-optic coefficients of AgGaS2 from temperature-tuned noncritical 3ω - ω → 2ω infrared parametric amplification

J. J. Zondy, D. Touahri

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21 Citations (Scopus)


We report the temperature dependence of a continuous-wave noncritically phase-matched (θ = 90°) optical parametric amplifier based on a 15-mm-long silver gallium sulfide crystal (AgGaS2) pumped by a 50-mW near-IR AlGaAs diode laser (λ3 = 0.843 μm). This amplifier is idler seeded by a 15-mW KCl:Li (FA-II) color- center laser (λ1 = 2.53 μm) and produces microwatt-range power of a signal radiation at λ2 = 1.265 μm. Updated linear and thermo-optic data of this chalcopyrite material, such as its room-temperature refractive indices and their temperature dependence, are devised from this type I (eoo) 3:1 frequency-division process and from other published data on noncritically phase-matched difference-frequency generation. The resulting dno,e/dT values reproduce fairly well all of the reported results on temperature phase-matched parametric mining.

Original languageEnglish
Pages (from-to)1331-1338
Number of pages8
JournalJournal of the Optical Society of America B: Optical Physics
Issue number6
Publication statusPublished - Jun 1997
Externally publishedYes

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Atomic and Molecular Physics, and Optics

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