90 degrees phase-matched third-harmonic generation of CO(2) laser frequencies in AgGa(1-x)In(x)Se(2).
AgGa(1-x) In(x)Se(2) with x=0.474 was found to be 90 degrees phase matchable for third-harmonic generation of CO(2) laser wavelengths 9.2714-10.5910 mum by means of temperature tuning. Sellmeier equations and the thermo-optic constant for this crystal are presented.
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