Spectral, Optical, Mechanical Properties of Lithium Doped Nonlinear Optical Crystal L-Lysine Monohydrochloride

Abstract

The cell and structural parameters of grown crystal were determined by single crystal x-ray diffraction analysis. The characteristic functional groups in the compound were identified from Fourier transform infrared spectroscopy. The transmission spectrum of this crystal show that the lower cut-off wavelength lies at 234 nm. The optical constant of the grown crystal like band gap, refractive index, reflectance, extinction coefficient and electrical susceptibility were also determined from UV-Vis-NIR spectrum. The powder second harmonic generation efficiency of the grown crystal measured by Kurtz technique is 0.55 times that of potassium dehydrogenate phosphate (KDP). Vicker's microhardness test showed that the hardness value increases with increasing the applied load upto 100 g.