Preparation, characterization and study on the nonlinear optical parameters of novel biphenyl-4-carbohydrazide derivative

Abstract

We report here the preparation, characterization and the 3rd order nonlinear optical properties of (N-[(E)-(3-Nitrophenyl) methylidene]) biphenyl-4-carbohydrazide, a novel organic NLO material. The characterization of the compound for molecular structural study was carried out by FTIR and X-ray Diffraction. A Photoluminescence and UV–vis spectrum was selected to study the linear optical properties. In dimethyl formamide (DMF) solution, the 3rd order NLO properties have been measured at 532 nm by DPSS continuous wave laser using the Z-scan technique. Open aperture data indicates the presence of two photon absorption (TPA) at 532 nm. The measured experimental values of nonlinear absorption coefficient (β) is 10-8 (cmW−1), the nonlinear refractive index(n2) is 10-11(cm2W−1), and third order susceptibility (χ(3)) is 10-9esu. Due to TPA at 532 nm the compound shows good optical limiting behavior. The values obtained are comparable with the values obtained for 4- methoxy chalcone derivatives and dibenzylidene acetone derivatives. The optical limiting threshold of the compound is 2.8 KJ/cm2 .The comparatively high value obtained indicates that this material may be used in optical device applications like optical limiters and optical switches.