L-arginine 4-nitrophenalate 4-nitrophenol dihydrate (LAPP) has been synthesized and grown by solution growth at room temperature using deionized water as a solvent. The various functional groups of the sample were identified by Fourier transform infra-red and Fourier transforms – Raman spectroscopic analyses. The Laser damage threshold of LAPP has been studied. Refractive index of LAPP single crystal was measured using Metricon prism coupler Instrument. The etching studies were carried out to study the quality of the grown crystals. The third order nonlinear optical properties of LAPP sample was analyzed by the Z-scan technique using 532 nm diode pumped CW Nd: YAG laser. The LAPP material exhibits negative optical nonlinearity. The results show that LAPP sample has potential applications in nonlinear optics and it can be exploited for optical limiting or switching. © 2017 Elsevier Ltd

Mahadevan R

Department of Multimedia

School of Design

Vellore Campus

Vinitha G

Physics

School of Advanced Sciences

Chennai Campus

Sankar P.K

Arivanandhan M

Ramachandran K

Anandan P.

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Optics & Laser Technology

Metal-semi organic NLO single crystal of Cadmium (II) dibromide L - Proline monohydrate (CBLPM) has been synthesized and the crystal was grown from solution by room temperature slow evaporation method. The crystal structure and cell parameters were refined by Rietveld refinement technique and confirmed that the metal-semi organic samples are in the orthorhombic system with space group P212121. The crystal structure of CBLPM is stabilized by intermolecular N–H…O, N–H….Br, O–H….O and O–H….Br hydrogen bonds. The water molecules serve as donors for the weak O–H⋯O and O–H⋯Br hydrogen bonds which link adjacent chains forming a three-dimensional structure. A Hirshfeld surface analysis suggests that the most significant contribution to the crystal packing is by H⋯Br contacts (26.2%). The complete vibrational features and electronic absorption spectra of the title compound were analyzed by FT-IR, FT-Raman and UV–visible spectra combined with density functional theory and time-dependent density functional computations. The second-order hyperpolarizability value of the molecule was also calculated at density functional theory method. The third-order nonlinear optical properties of the crystal were studied by Z-scan techniques using CW laser with wavelength 532 nm. The open aperture result exhibits the saturation absorption, which indicates that this material has potential candidate for optical limiting applications. © 2019 Elsevier B.V.

Journal of Molecular Structure

Synthesis, physicochemical properties and third-order optical nonlinearities of cadmium (II) dibromide l - Proline monohydrate for optical limiting application

Single crystals of pure and crystal violet dye-doped L-Argininium bis dihydrogen phosphate were grown using slow evaporation technique. The crystalline nature and the structure parameters were confirmed by powder X-ray diffraction technique. Blue and red shifting hydrogen bonds were predicted by DFT on the basis of vibrational spectral (FT-IR &amp; FT-Raman), AIM and NBO analyses. Bifurcated N[sbnd]H⋯O and O[sbnd]H⋯O intermolecular hydrogen bonds in LADP molecule were visualized by Hirshfeld surface. 13C and 1H NMR spectroscopy confirmed the structure of LADP. Doped LADP crystal shows enhancements in the wavelength and longer lifetimes as identified from photoluminescence spectra and decay analysis respectively. The high values of electron mobility and low value of λelectron reflect the applicability of LADP in OLED devices. Enhancement in nonlinear optical parameters in dye-doped LADP crystal was revealed from the Z-scan technique which shows its usefulness in the fabrication of NLO devices. © 2019 Elsevier B.V.

Optical Materials

Experimental and theoretical studies on the bifurcated hydrogen bonded NLO active material of pure and crystal violet dye-doped L-argininium bis dihydrogen phosphate

Organic nonlinear optical o-Phenylenediaminium p-Toluene sulfonate single crystal was grown by slow evaporation solution growth method. The crystal system and lattice parameters were confirmed by single crystal X-ray diffraction studies. Thermal stability (246 °C) of the system was observed by thermal studies. UV-Vis spectral studies revealed the lower cut-off wavelength transparency and corresponding band gap. Photoluminescence emission peak of the crystal occurred in yellow region. Third order nonlinear optical properties were elucidated by Z-scan technique and found that the crystal possesses saturable absorption and the self-defocusing effect. © 2019 Elsevier B.V.

Materials Letters

Studies on the third order nonlinear optical properties of a novel o-Phenylenediaminium p-Toluenesulfonate single crystal

Single crystals of ammonium tetroxalate dihydrate doped with p-nitrophenol (PNP doped ATOXAL) were grown using the slow evaporation solution growth technique. The harvested crystals possessed the P1¯ space group and occupied the triclinic crystal system. From UV–vis-NIR spectrum the optical parameters like optical band gap (Eg), refractive index (n), electric susceptibility (χc) and real and imaginary parts of the dielectric constant were found to be 3.276 eV, 1.58, 0.199, 2.498 and 0.93 × 10−5 respectively at the lower cutoff wavelength. The refractive index value calculated using Abbe's refractometer was 1.581. The crystal exhibited negative photoconductivity. The photoluminescent emission spectrum was recorded and studied. The mechanical properties have been studied using Vicker's microhardness tester and the material belongs to the soft category. The thermal property of the crystal was analysed from the TGA/DTG/DSC curves. The dielectric studies carried out for varied frequencies and temperatures reveal that the material exhibits non-Debye β relaxation. Z-scan studies show that the grown crystal has negative nonlinearity and saturation absorption. © 2018 Elsevier Ltd

Effect of P-nitrophenol as dopant in ammonium tetroxalate dihydrate – Spectral, optical, thermal and dielectric analyses

A new alkali metal borate with formula Na6 [B4O5 (OH)4]3. 8H2O single crystal has been grown by slow evaporation method under room temperature condition for the first time. The structural analysis reveals that the grown crystal crystallizes in the rhombohedral space group R32 with cell parameters a = 11.27 Å, b = 11.27 Å, c = 21.27 Å and α = β = 90°, γ = 120°. The intermolecular interactions of symmetric stretching of BO3 and asymmetric stretching of BO4 were identified by Fourier-transform infrared spectroscopy (FT-IR). Optical investigation on the hydrated borate shows that the material possessed a high transmittance of about 60% in the entire UV- visible region with an optical absorption edge at 220 nm and the band gap was found to be 4.972 eV. The theoretical calculations were performed in order to find the linear optical constant such as linear absorption coefficient, extinction coefficient and reflectance etc. Thermogravimetric (TG)/Differential scanning calorimetry (DSC) analysis for the grown crystal displayed that the material is stable up to 116 °C and having the melting point of 145 °C. The frequency independent dielectric constant and dielectric loss were performed at different temperature. AC conductivity was studied by means of electrical relaxation process and it is due to the presence of water molecules in the compound. The third order nonlinear susceptibility (χ3), nonlinear refractive index (n2) and the absorption coefficient (β) are found to be in the order of 1.36 × 10−6 esu, 3.88 × 10−8 cm2/W and 0.026 × 10−4 cm/W respectively. The strong optical limiting behaviour of the material could be attributed to the two photon absorption mechanism and negative nonlinearity due to self-defocusing effect. © 2017 Elsevier B.V.

Materials Chemistry and Physics

Insight on the growth and property studies of inorganic hydrated borate (Na6 [B4O5 (OH)4]3. 8H2O) single crystal – An effective third order nonlinear optical (NLO) material for optical limiting application

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy

Crystal growth, structural, thermal and mechanical behavior of l-arginine 4-nitrophenolate 4-nitrophenol dihydrate (LAPP) single crystals

A novel l-arginine salt nonlinear optical crystal: l-arginine p-nitrobenzoate monohydrate (LANB)

Growth, structural, spectral, optical, and thermal studies on amino acid based new NLO single crystal: l-phenylalanine-4-nitrophenol

Crystal growth and characterization of l-histidine hydrochloride monohydrate semiorganic nonlinear optical single crystals

Journal of Crystal Growth

Single crystal growth, crystal structure and characterization of a novel crystal: l-arginine 4-nitrophenolate 4-nitrophenol dehydrate (LAPP)

Non linear optical studies on semiorganic single crystal: L-arginine 4-nitrophenalate 4-nitrophenol dihydrate (LAPP)

Journal	Data powered by TypesetOptics & Laser Technology
Publisher	Data powered by TypesetElsevier BV
ISSN	0030-3992
Open Access	No