Non-destructive quality evaluation of periodically poled MgO:PPLN and Rb:PPKTP crystals based on parametric light generation

Jonas Banys; Jokūbas Pimpe; Ona Balachninaitė; Vygandas Jarutis; Julius Vengelis

doi:10.1117/12.2676794

28 September 2023 Non-destructive quality evaluation of periodically poled MgO:PPLN and Rb:PPKTP crystals based on parametric light generation

Jonas Banys, Jokūbas Pimpe, Ona Balachninaitė, Vygandas Jarutis, Julius Vengelis

Author Affiliations +

Proceedings Volume 12665, Novel Optical Systems, Methods, and Applications XXVI; 1266505 (2023) https://doi.org/10.1117/12.2676794
Event: SPIE Optical Engineering + Applications, 2023, San Diego, California, United States

Abstract

We present a flexible and automated technique to evaluate the quality of periodically poled crystals throughout their entire volume. By translating the crystal perpendicular to the pump laser beam and recording the parametric signal conversion efficiency simultaneously, we were able to quantitatively describe the homogeneity of the ferroelectric domain structure in periodically poled lithium niobate (MgO:PPLN) and potassium titanyl phosphate (Rb:PPKTP) crystals. This analysis included crystals with single, multi, and fan-out grating designs. Such evaluation is non-destructive, achieves precise control and resolution, and provides a practical assessment of the overall efficiency of the quasi-phase-matched device.

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Jonas Banys, Jokūbas Pimpe, Ona Balachninaitė, Vygandas Jarutis, and Julius Vengelis "Non-destructive quality evaluation of periodically poled MgO:PPLN and Rb:PPKTP crystals based on parametric light generation", Proc. SPIE 12665, Novel Optical Systems, Methods, and Applications XXVI, 1266505 (28 September 2023); https://doi.org/10.1117/12.2676794

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