Publications (7)11.11 Total impact
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Article: Investigation on second and third order nonlinear optical, phase matching and birefringence properties of γ-glycine single crystals
Optical Materials 12/2012; 35(2):307-309. · 2.02 Impact Factor -
Article: 2-Carb-oxy-pyridinium maleate.
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ABSTRACT: In the title mol-ecular salt, C(6)H(6)NO(2) (+) (.)C(4)H(3)O(4) (-), the 2-carb-oxy-pyridinium cation is essentially planar with a maximum deviation of 0.003 (3) Å. In the crystal, adjacent cations and anions are linked by an extensive system of weak N-H⋯O, O-H⋯O and C-H⋯O inter-actions, forming a layer parallel to the ab plane.Acta Crystallographica Section E Structure Reports Online 11/2012; 68(Pt 11):o3081. · 0.35 Impact Factor -
Article: Studies on growth, structural, dielectric, laser damage threshold, linear and nonlinear optical properties of methylene blue admixtured l-arginine phosphate single crystal.
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ABSTRACT: l-Arginine phosphate (LAP) and methylene blue dye admixtured l-arginine phosphate single crystals were grown by slow cooling technique and their cell parameters, crystalline perfection, dopant inclusion were confirmed by single crystal, powder X-ray diffraction and high resolution X-ray diffraction analyses respectively. The modes of vibrations of different functional groups present in pure and dye admixtured LAP crystals have been identified by FTIR spectral analysis. The UV-Vis-NIR spectral study was performed on the grown crystals and found that the crystals are transparent in the entire visible-NIR region. The dielectric measurement was carried out on the grown crystals as a function of frequency at room temperature. The microhardness hardness study on (100) plane of grown crystals reveals the mechanical behavior of the crystals. The laser damage threshold value significantly enhanced for dye admixtured crystal in comparison with pure LAP crystal. The relative SHG efficiency of methylane blue admixtured LAP crystal was found to be 1.3 times higher than that of pure LAP crystal.Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 09/2012; 99C:27-32. · 2.10 Impact Factor -
Article: Studies on synthesis, growth, structural, thermal, linear and nonlinear optical properties of organic picolinium maleate single crystals.
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ABSTRACT: Picolinium maleate (PM), an organic material has been synthesised and single crystals were grown by slow evaporation technique. The structure of the grown crystal was elucidated by using single crystal X-ray diffraction analysis. PM crystal belongs to the monoclinic crystallographic system with space group P2(1)/c. The crystalline perfection of the grown crystals was analyzed by high-resolution X-ray diffraction rocking curve measurements. The presence of functional groups in PM was identified by FTIR and FT-NMR spectral analyses. Thermal behaviour and stability of picolinium maleate were studied by TGA/DTA analyses. UV-Vis spectral studies reveal that PM crystals are transparent in the wavelength region 327-1100nm. The laser damage threshold value of PM crystal was found to be 4.3GW/cm(2) using Nd:YAG laser. The Kurtz and Perry powder second harmonic generation technique confirms the nonlinear optical property of the grown crystal.Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 08/2012; 98:7-13. · 2.10 Impact Factor -
Article: Dimethyl-ammonium 4-hy-droxy-benzoate.
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ABSTRACT: In the crystal structure of the title compound, C(2)H(8)N(+)·C(7)H(5)O(3) (-), the anions and cations are linked by O-H⋯O and N-H⋯O hydrogen bonds into layers parallel to the ac plane.Acta Crystallographica Section E Structure Reports Online 05/2012; 68(Pt 5):o1445. · 0.35 Impact Factor -
Article: Growth, structural, thermal, linear and nonlinear optical and laser damage threshold studies of picolinium tartrate monohydrate single crystals.
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ABSTRACT: Picolinium tartrate monohydrate (PTM), a novel organic nonlinear optical material was synthesized and bulk crystals were grown from aqueous solution by slow cooling technique. The cell parameters of the grown crystal were found by single and powder X-ray diffraction analyses. The crystalline perfection of the grown crystals has been analyzed by high-resolution X-ray diffraction (HRXRD) rocking curve measurements. The presence of functional groups in the grown crystal was identified by FTIR and FT-Raman spectral analyses. UV-Vis spectral studies reveal PTM crystals are transparent in the wavelength region of 295-1100 nm. The thermal characteristics of PTM were analyzed by TGA/DTA studies. The dielectric and mechanical behaviours of PTM crystals were investigated. Dislocation density was estimated to be 2.89 × 10(3) cm(-2) on the flat-surface of PTM crystals from the etching studies. The laser induced surface damage threshold for the grown crystal was measured using Nd:YAG laser. Its second harmonic generation relative efficiency was measured by Kurtz and Perry powder technique and was observed to be comparable with KDP crystal.Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 04/2012; 95:310-6. · 2.10 Impact Factor -
Article: Synthesis, structural, optical and thermal studies of an organic nonlinear optical 4-aminopyridinium maleate single crystal.
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ABSTRACT: Synthesis and growth of a novel organic nonlinear optical (NLO) crystal of 4-aminopyridinium maleate (4APM) in larger size by the slow evaporation solution growth technique are reported. Single crystal and powder X-ray diffraction analyses reveal that 4APM crystallizes in monoclinic system with space group P2(1) with cell parameters a=8.140(4)Å, b=5.457(5)Å, c=10.926(10)Å and volume=481.4(7)Å(3). The grown crystal has been characterized by Fourier transform infrared and UV-visible spectral analyses. Thermogravimetric analysis (TGA) and differential thermal analysis (DTA) have been carried out to study its thermal properties. Dielectric measurements have been carried out to study the distribution of charges within the crystal. The mechanical strength of the crystal has been studied by using Vickers' microhardness test. The etching studies have been carried out on the grown crystal. The Kurtz and Perry powder SHG technique confirms the NLO property of the grown crystal and the SHG efficiency of 4APM was found to be 4.8 times greater than that of KDP crystal.Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 03/2012; 88:77-81. · 2.10 Impact Factor
