A self-defocusing third-order nonlinear optical material l-Alanine Barium Chloride single crystal used in optoelectronic device applications

Abstract

Slow evaporation method was used to produce a single crystal of l-Alanine Barium Chloride (LABC), a semi-organic nonlinear optical material. The grown crystal non-centrosymmetric nature can be seen in the results of a single-crystal XRD analysis. Using Fourier transform infrared spectral analysis, the unique functional groups and chemical makeup of LABC compounds were found. The lower cut-off wavelength is observed down to 253 nm and direct optical band gap was calculated as 4.54 eV. A photoluminescence experiment found the LABC crystal emission spectrum. EDAX spectrum analysis revealed the crystal metal ion (Ba) existence. The Z-scan method with an Nd: YAG laser at 532 nm was used to analyse the third-order optical nonlinearity characteristics of LABC in detail. A Vicker's microhardness tester was used to measure the microhardness of the LABC crystal under the same load.