Growth and characterization of barium bis para-nitrophenolate para-nitrophenol tetrahydrate single crystal for NLO applications

Single crystals of barium bis para-nitrophenolate para-nitrophenol tetrahydrate (BBPNT) was grown using slow evaporation technique with the crystal dimensions of 15 x 10 x 6 mm3. The structure of the BBPNT crystal was examined by X-ray diffraction and the functional groups present in the compound were identified using FTIR spectrum. The optical and electrical properties were characterized by UV-Vis spectrum and dielectric studies respectively. Thermal properties of the grown crystal were investigated by using thermo-gravimetric (TG) and differential thermal analyses (DTA). The mechanical behavior of the grown crystal was studied using Vickers microhardness test. Using the Kurtz-Perry powder method, the second-harmonic generation efficiency was found to be 15.75 times greater than to that of KDP. Third-order nonlinear response was studied using Z-scan technique with a He-Ne laser (632.8 nm) and NLO parameters such as intensity dependent refractive index, nonlinear absorption coefficient and third-order susceptibility were also estimated. In the PL spectra, a broad band observed at 525 nm sug-gests its applications for fabricating green laser and new tunable laser system. The laser damage thresh-old value of BBPNT was found to be 5.09 GIN/cm2 using an Nd: YAG laser.Copyright (c) 2022 Elsevier Ltd. All rights reserved.Selection and peer-review under responsibility of the scientific committee of the International Confer-ence on Advanced Materials.