Abstract
The optically transparent and bulk single crystal of p-Toluidine p-Toluenesulfonate (PTPT) was grown by slow evaporation technique. The lattice parameters and crystallinity of the grown crystal were estimated by single crystal XRD. The optical absorption of the crystal was recorded using the UV-Vis-NIR spectrophotometer. The optical bandgap and optical constants of the material were determined by using absorption spectrum. The refractive index of the grown crystal has been determined using the Brewster angle method. The dielectric constant and dielectric loss were measured as a function of frequency and temperature for the grown crystal. Nonlinear optical properties were performed to confirm the SHG efficiency of the grown crystal. Hence, PTPT is an excellent NLO material with enhanced SHG efficiency required for important applications in the field of optoelectronic and photonics. This material exhibits NLO behaviour remarkably due to its better optical and dielectric properties.
Highlights
The nonlinear optics is the field which includes all phenomena in which optical parameters of materials are changed with the interaction of intense coherent source of light
Materials with large second order nonlinear optical properties, short transparency cut off wavelengths, appropriate refractive index for phase matching, very low absorption, good optical quality, high damage threshold are of interest in view of the various applications
The single crystal of p-Toluidine p-Toluenesulfonate (PTPT) has been grown by slow evaporation technique
Summary
The nonlinear optics is the field which includes all phenomena in which optical parameters of materials are changed with the interaction of intense coherent source of light. NLO materials find their applications in electro-optical shutters, color displays and signal processing. Materials with large second order nonlinear optical properties, short transparency cut off wavelengths, appropriate refractive index for phase matching, very low absorption, good optical quality, high damage threshold are of interest in view of the various applications. Amongst the organic NLO crystals, PTPT shows good SHG efficiency. In the present investigation we report the growth, optical and electrical properties of PTPT crystal. P-Toluidine p-Toluenesulfonate (PTPT) single crystal was formed in ethanol solution containing p-toluenesulfonic acid, p-Toluidine in molar ratio 1:1 at room temperature. The prepared solution was allowed to evaporate at room temperature.
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