Temperature-dependent refractive index of potassium acid phthalate (KAP) in the visible and near-infrared |
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| Authors: | K. Moutzouris I. StavrakasD. Triantis M. Enculescu |
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| Affiliation: | a Laboratory of Electric Characterization of Materials and Electronic Systems, Department of Electronics, Technological Educational Institution of Athens, Athens 12210, Greece
b National Institute of Materials Physics, PO Box MG-7, Magurele-Bucharest 77125, Romania |
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| Abstract: | We report an investigation of the temperature-dependence of the refractive index of potassium acid phthalate (KAP) crystal. Refractive index measurements are based on a refractometer setup operating in a temperature range from 25 °C to 200 °C and using five different laser wavelengths in the visible and near-infrared. Temperature-dependent dispersion relations are proposed, with an average fitting quality that exceeds experimental accuracy, and compared to previous room-temperature Sellmeier equations. Consequently, the new relations are employed for the calculation of various linear and nonlinear optical properties of KAP. |
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| Keywords: | Nonlinear optical materials Temperature-dependent Sellmeier equations KAP |
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