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<p>Values of all four elements of the cubic susceptibility in KDP and DKDP (80% deuteration) crystals at wavelengths of 1030 and 515 nm were measured for the first time by the modified z-scan technique. Values of the tensor elements <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\chi _{11}\)</EquationSource> </InlineEquation>, <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\chi _{16}\)</EquationSource> </InlineEquation>, and <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(\chi _{33}\)</EquationSource> </InlineEquation> are approximately the same for the considered crystals. The value of the effective cubic susceptibility in the DKDP (<InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(Z-\)</EquationSource> </InlineEquation>cut) crystal does not depend on the azimuthal angle of rotation in contrast of KDP crystal at the experimental measurement accuracy. Thus the values of tensor elements <InlineEquation ID="IEq5"> <EquationSource Format="TEX">\(\chi _{18}\)</EquationSource> </InlineEquation> are different in both crystals.</p>

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Determining all elements of cubic nonlinearity susceptibility tensor in KDP and DKDP crystals

  • 期刊论文

  • 发表日期：

    2025年11月15日

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  • A. K. Poteomkin,
  • M. A. Martyanov,
  • I. V. Kuzmin,
  • E. I. Gacheva,
  • S.Yu. Mironov,
  • E. A. Khazanov

摘要

Values of all four elements of the cubic susceptibility in KDP and DKDP (80% deuteration) crystals at wavelengths of 1030 and 515 nm were measured for the first time by the modified z-scan technique. Values of the tensor elements \(\chi _{11}\) , \(\chi _{16}\) , and \(\chi _{33}\) are approximately the same for the considered crystals. The value of the effective cubic susceptibility in the DKDP ( \(Z-\) cut) crystal does not depend on the azimuthal angle of rotation in contrast of KDP crystal at the experimental measurement accuracy. Thus the values of tensor elements \(\chi _{18}\) are different in both crystals.