Abstract

On the basis of accurately measured refractive indexes, the authors have obtained the Sellmeier's equations for flux grown KTiOPO/sub 4/ (KTP) crystal and used them to calculate the phase matched angles ( theta /sub m/, phi /sub m/) and effective nonlinear coefficients (d/sub eff/) for type I and III second harmonic generation (SHG) and sum frequency mixing (SFM) of radiations at 1.0795 and 1.3414 mu m. The optimum phase matching conditions for 1.0795 and 1.3414 mu m SHG are that theta /sub m/=86.88 and 58.88 degrees , respectively, in an XZ plane ( phi =0) and for SMF of 1.0795 and 1.3414 mu m in the same plane 76.02 degrees . The corresponding d/sub eff/ values calculated from theta /sub m/s are 18.07*10/sup -9/ and 17.42*10/sup -9/ esu. >

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