Growth and Characterization of Non-Linear Optical Single Crystal: L-cysteine Hydrochloride Monohydrate

Abstract

Nonlinear optical single crystals of L-cysteine hydrochloride monohydrate (LCB) were grown by slow evaporation technique. Single crystal X-ray diraction analysis revealed the crystal system and helped to determine lattice parameter values. Powder X-ray diraction analyses were carried out and the diraction patterns were indexed. The optical properties of the crystals were determined using UV-visible spectroscopy. Optical constants such as refractive index, extinction coecient and electric susceptibility were determined from UV-visible spectroscopy. The Fourier transform infrared studies conrmed the various functional groups present in the grown crystal. The mechanical behaviour of the grown crystals was studied using Vicker's microhardness tester. The thermal analysis conrmed that the crystal was stable up to 108.7• C. The dielectric constant and the dielectric loss measurements were carried out for dierent temperatures and frequencies. Second harmonic generation of LCB crystal was investigated by the Kurtz powder technique.

Dielectric, fluorescence, filter, nano tribological and photoconductivity studies of 4-(4-chlorophenyl)-7,7-dimethyl-7,8-dihydro-4H-1-benzopyran-2,5(3H,6H)-dione (CPDMDHHBPHHD) macro and nano crystals

“…The profound use of the material in the construction of photonic and NLO devices is attributed to its lower values of ε r at high frequencies. This further specifies that the sample exhibits low defects with enhanced optical quality [20]. As in the case of dielectric constant, a strong dependency on the frequency of the applied field appears to co-exist of dielectric loss for the macro and nanosample which is clearly evident from Fig.…”

Studies on Growth, Spectral, Thermal, Mechanical and Optical Properties of 4-Bromoanilinium 4-Methylbenzenesulfonate Crystal: A Third Order Nonlinear Optical Material

“…In addition to large NLO coefficient, an organic NLO crystal should be transparent in the UV region 4,5 . NLO applications require materials with very large macroscopic second order susceptibilities which are usually constituted from molecules with large molecular first hyperpolarizability and oriented in a non-centrosymmetric arrangement 6 . The majority of the commercial materials for second order applications are inorganics, particularly for high power use.…”