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The organic material 4-ethoxy-4-N-methyl-4-stilbazolium hexafluorophosphate (EMSHP) is a new NLO material and new derivative in stilbazolium tosylate family. In this work we synthesized EMSHP, the derivative of DAST, by slow evaporation method. The chromophores of the EMSHP crystal makes an angle of about 28 with repeat to a- axis which makes this material a promising terahertz (THz) wave generation and used for various electro – optic applications. The crystal system is found as monoclinic. From the UV–Vis NIR absorption spectra the good transparency is revealed. The indication at 498 nm of the crystal ascertains the blue to green emission was validated by using photo luminescence (PL) analysis. The third-order nonlinear optical properties such as nonlinear refractive index (n 2 ), absorption co-efficient (β) and susceptibility (χ (3) ) were studied by Z-scan technique at 632.8 nm using He-Ne laser. All the above studies supports the as grown EMSHP crystal is a suitable candidate for generation of THz and opto- electronic application.

journal of nanoscience and technology

Investigation on the Growth, Structural and Third Order Nonlinear Optical Properties of 4-Ethoxy-4-N-Methyl-4-Stilbazoliumhexafluorophosphate (EMSHP) Single Crystal