scholarly journals Optical, Thermal, and Mechanical Properties of L-Serine Phosphate, a Semiorganic Enhanced NLO Single Crystal

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
K. Rajesh ◽  
A. Mani ◽  
V. Thayanithi ◽  
P. Praveen Kumar
Keyword(s):  
Single Crystal ◽  
Grown Crystal ◽  
Thermal Studies ◽  
Visible Region ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Xrd Diffraction ◽  
Evaporation Technique ◽  
Ft Ir ◽  
Serine Phosphate

Single crystals of L-serine phosphate (LSP) were grown by slow evaporation technique. The optical studies reveal the transparency of the crystal in the entire visible region. Grown crystal was subjected to single crystal XRD diffraction technique. Thermal studies of LSP confirm the thermal stability of the crystal and it is stable up to 210°C. The functional groups and optical behaviour of the crystal were identified from FT-IR and UV-Vis analysis. The crystals were also characterized by microhardness and photoconductivity to determine the mechanical strength and the optical conductivity. Laser damage threshold and nonlinear optical activity of the grown crystal were confirmed by Q-switched Nd : YAG laser beam.

scholarly journals Structural, Linear, and Nonlinear Optical and Mechanical Properties of New Organic L-Serine Crystal

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
K. Rajesh ◽  
P. Praveen Kumar
Keyword(s):  
Single Crystal ◽  
Nonlinear Optical ◽  
Grown Crystal ◽  
Damage Threshold ◽  
Threshold Value ◽  
Laser Damage Threshold ◽  
Solubility Study ◽  
Evaporation Technique ◽  
Linear And Nonlinear ◽  
Optical And Mechanical Properties

Nonlinear optical single crystal of organic amino acid L-Serine (LS) was grown by slow evaporation technique. Solubility study of the compound was measured and metastable zone width was found. Single crystal X-ray diffraction study was carried out for the grown crystal. The linear and nonlinear optical properties of the crystal were confirmed by UV-Vis analysis and powder SHG tester. FT-IR spectrum was recorded and functional groups were analyzed. Vickers’ microhardness studies showed the mechanical strength of the grown crystal. Laser damage threshold value of the crystal was calculated. Photoconductivity studies reveal the conductivity of the crystal.

scholarly journals Growth and Characterization of Non-Linear Optical Single Crystal Guanidinium triscadmium Sulphate Octahydrate

2019 ◽  
Vol 31 (3) ◽  
pp. 661-668
Author(s):  
A. Rajeswari ◽  
P. Murugakoothan
Keyword(s):  
Grown Crystal ◽  
Visible Region ◽  
Damage Threshold ◽  
Hardness Test ◽  
Laser Damage Threshold ◽  
Nonlinear Susceptibility ◽  
X Ray Diffraction ◽  
Cell Parameters ◽  
Evaporation Technique

Semi-organic single crystals of guanidinium tris cadmium sulphate octahydrate (GuCdS) with nonlinear optical properties were successfully grown by slow solvent evaporation technique. The grown crystals were characterised by powder X -ray diffraction analysis to determine the unit cell parameters. The structure of the compound belongs to triclinic crystal system and space group is found to be P1. The grown crystals were subjected to FTIR spectroscopic analysis to confirm the presence of functional groups present in the compound. UV-vis-NIR spectral study suggested that the grown crystal is transparent in the entire visible region, the lower cut off wavelength is 200 nm and the band gap value is estimated to be 6.14 eV. Nonlinear refractive index (n2), absorption coefficient (β) and third order nonlinear susceptibility (χ(3)) were calculated using Z-scan technique. The thermal stability of grown crystal was investigated by thermogravimetric and differential thermogravimetric analyses. The dielectric behaviour of the grown crystal was analyzed as a function of frequency of the applied field. The mechanical properties of grown crystal were examined by Vickers′s micro hardness test. The laser damage threshold of the grown crystal was calculated to be 1.796 GW/cm2.

Structural, growth and optical characterizations of an organic third-order nonlinear crystal: Guanidinium trichloroacetate

2015 ◽  
Vol 24 (04) ◽  
pp. 1550045 ◽  
Author(s):  
M. Dhavamurthy ◽  
G. Peramaiyan ◽  
M. Nizam Mohideen ◽  
S. Kalainathan ◽  
R. Mohan
Keyword(s):  
Single Crystal ◽  
Grown Crystal ◽  
Nonlinear Crystal ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Single Shot ◽  
Third Order ◽  
Structural Growth ◽  
Evaporation Technique ◽  
High Degree

Guanidinium trichloroacetate (GTCA), a novel organic single crystal was grown by a slow evaporation technique. The single crystal X-ray diffraction study revealed that the GTCA crystal belongs to tetragonal crystal system with the space group P41. From the linear optical studies, the lower cut-off wavelength of grown crystal was found at 257[Formula: see text]nm. The luminescent study showed that the GTCA crystal has high degree of luminescence. The single shot laser damage threshold of grown crystal is found to be 2.6[Formula: see text]GW/cm2. The nonlinear refractive index, absorption coefficient and third-order susceptibility were estimated by Z-scan technique. The two independent tensor coefficients [Formula: see text] of the dielectric permittivity were calculated.

STUDIES ON THE GROWTH, SPECTRAL, OPTICAL AND THERMAL PROPERTIES OF 4-NITROANILINE PICRATE SINGLE CRYSTALS

2013 ◽  
Vol 27 (32) ◽  
pp. 1350235 ◽  
Author(s):  
P. K. SIVAKUMAR ◽  
M. KRISHNA KUMAR ◽  
R. MOHAN KUMAR ◽  
R. KANAGADURAI
Keyword(s):  
Single Crystal ◽  
Grown Crystal ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Threshold Value ◽  
Laser Damage Threshold ◽  
X Ray Diffraction ◽  
Plasma Energy ◽  
Ftir Spectral Analysis ◽  
Growth Method

In this paper, an organic 4-nitroaniline picrate (4NP) single crystal was grown by solution growth method. Single crystal X-ray diffraction study revealed that grown crystal belongs to orthorhombic system with Pbcn space group. The solid state constants such as plasma energy, Penn gap, Fermi energy and polarizability of 4NP crystal were determined theoretically. The functional groups of the grown crystals were confirmed qualitatively from FTIR spectral analysis. The thermal decomposition and melting point of the crystal were determined from thermogravimetric analysis. The optical absorption and cut-off wavelength of the crystal were determined from UV-visible study. The second harmonic generation (SHG) efficiency of the grown crystal was measured by Kurtz–Perry SHG test using Nd : YAG laser. The laser damage threshold value of the grown crystal was estimated by multi-shot method using 1064 nm laser.

scholarly journals Crystal growth, Dielectric and Thermal Studies on N-Methyl-4-Nitroaniline: Isophthalic Acid Molecular Adduct Crystals

2017 ◽  
Vol 2 (9) ◽  
pp. 7 ◽  
Author(s):  
Ravikumar Lakshmi ◽  
P. Prabukanthan
Keyword(s):  
Single Crystal ◽  
Single Crystals ◽  
Raman Spectra ◽  
Thermal Studies ◽  
Visible Region ◽  
Isophthalic Acid ◽  
Powder Xrd ◽  
Proton Nuclear Magnetic Resonance ◽  
Differential Scanning Calorimetric ◽  
Ft Ir

Organic compound N-methyl-4-nitroaniline isophthalic acid (NMNAIPA) needle shaped single crystals with a dimension of 4x1x1 cm3 were grown by slow evaporation technique in methanol as solvent at ambient temperature. The grown single crystals have been analyzed through powder X-ray diffraction (XRD), proton nuclear magnetic resonance (1HNMR), carbon NMR (13CNMR), Fourier transform infrared (FT-IR),  Raman spectra and UV-Vis spectra. Based on powder XRD patterns, the as-grown NMNAIPA single crystal was a good crystalline in nature.  The various planes of reflection have been identified from the powder XRD pattern.  It belongs to the monoclinic crystal system.  The presences of functional groups were identified from FT-IR and Raman spectra. UV-Vis-NIR spectral analysis showed 74% transmission in the visible region for NMNAIPA crystal. The dielectric constant and dielectric loss of the as-grown NMNAIPA single crystal was studied as a function of frequency and temperature. Thermo gravimetric (TG) and differential scanning calorimetric (DSC) techniques were carried out to characterize the thermal behavior and stability of as-grown NMNAIPA single crystal.  It has thermal stability around 421 K.  The nonlinear optical (NLO) activity test using a pulsed Nd:YAG laser confirms the generation of second harmonics and it shows 1.25 times relatively greater than KDP.

scholarly journals Synthesis, growth and characterization of NaAl(SO4)·H2O triangular prism single crystal for inorganic NLO application

2019 ◽  
Vol 37 (2) ◽  
pp. 142-148
Author(s):  
P. Sakthi ◽  
R. Rajasekaran ◽  
A. Arun
Keyword(s):  
Dielectric Loss ◽  
Single Crystal ◽  
Grown Crystal ◽  
Triangular Prism ◽  
X Ray Diffraction ◽  
Low Dielectric ◽  
Different Temperatures ◽  
Evaporation Technique ◽  
Ft Ir

AbstractAn inorganic coordination complex of single crystal containing sodium and aluminum (SA) was grown at room temperature by slow evaporation technique. The crystal was characterized using single crystal X-ray diffraction (XRD), FT-IR, UV-Vis, SHG, SEM, EDX and TG/DTA analyses. The size of the grown crystal was around 17 mm × 15 mm × 5 mm. Both optical and SEM photographs confirmed that the crystal is transparent with smooth surface. The XRD data showed that the crystal belongs to the BCC crystal structure. The crystal shows excellent transparency in the entire region of visible light (cut-off value is 339 cm−1). The dielectric constant as well as dielectric loss of the sample was calculated by varying frequencies at different temperatures and the presence of low dielectric loss proved that this crystal can be used for the NLO application.

Crystal Growth, Optical, Dielectric, Thermal, Mechanical, Laser Damage Threshold and Second Harmonic Generation Characterization of Bis 2,5-Dimethylanilinium Sulfate Single Crystal

2018 ◽  
Vol 24 (8) ◽  
pp. 5785-5789
Author(s):  
A Mani ◽  
K Rajesh ◽  
P. Praveen Kumar
Keyword(s):  
Second Harmonic Generation ◽  
Single Crystal ◽  
Harmonic Generation ◽  
Grown Crystal ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Spectroscopic Studies ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Monoclinic System

Single crystals of bis 2,5-dimethylanilinium sulfate (bis 2,5-DAS) were grown by slow evaporation solution growth technique at room temperature. The crystalline nature of the grown crystal was confirmed by the single crystal X-ray data. Bis 2,5-DAS crystal was found to crystallize in monoclinic system with non-centrosymmetric space group Cc. The various functional groups presented in the crystal were confirmed by FT-IR spectroscopic studies. Optical transmittance of the grown crystal was studied by UV–Vis–NIR spectroscopy. The dielectric loss and dielectric constant measurement as a frequency and temperature were measured on bis 2,5-DAS single crystal. The thermal stability and decomposition stages of the grown crystal were studied by TG-DTA analysis. Microhardness measurements revealed that bis 2,5-DAS belongs to a soft material category. Laser damage threshold studies were carried out for the grown crystal. The second harmonic generation of the crystal was confirmed and the efficiency was measured using Kurtz Perry powder method.

scholarly journals Growth and characterization of NLO crystal: L-leucine phthalic acid potassium iodide

2015 ◽  
Vol 33 (3) ◽  
pp. 529-536 ◽  
Author(s):  
M.R. Jagadeesh ◽  
H .M. Suresh Kumar ◽  
R. Ananda Kumari
Keyword(s):  
Single Crystal ◽  
Potassium Iodide ◽  
Phthalic Acid ◽  
Grown Crystal ◽  
Visible Region ◽  
Dielectric Behavior ◽  
Dielectric Study ◽  
Cutoff Wavelength ◽  
Micro Hardness ◽  
Ft Ir

Abstract A new semi-organic non linear optical crystal, L-leucine phthalic acid potassium iodide (LLPPI) has been grown from an aqueous solution by slow evaporation method. The grown crystals were subjected to different characterizations, such as single crystal XRD, FT-IR, UV-Vis, TGA, SEM, EDAX, micro hardness, dielectric and powder SHG. Single crystal structure was determined from X-ray diffraction data and it revealed that the crystal belongs to triclinic system with the space group P1. The vibrational frequencies of various functional groups were derived from FT-IR spectrum. Thermal stability of the grown crystal was investigated by TG-DTA studies and it was observed that the crystal was thermally stable up to 192 °C. Optical absorption study was carried out and a good transparency in the entire visible region was observed at the lower cutoff wavelength of 227 nm. Dielectric study was performed as a function of frequency and normal dielectric behavior was observed. The micro hardness test was carried out and the load dependent hardness was measured. Kurtz powder method was employed to explore the NLO characteristics of the grown crystal.

scholarly journals Photoluminescence, laser damage threshold, optical transmittance, FTIR, mechanical, dielectric, thermal and XRD studies on Bis – Glycine hydrochloride single crystal

2016 ◽  
Vol 12 (11) ◽  
pp. 4523-4535
Author(s):  
L. Gobinathan ◽  
K. Boopathy
Keyword(s):  
Single Crystal ◽  
Grown Crystal ◽  
Second Harmonic ◽  
Damage Threshold ◽  
Optical Transmittance ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Slow Cooling ◽  
Second Harmonic Generation Efficiency ◽  
Cell Parameters

Single crystals of Bis – glycine hydrochloride (BGHC) were grown from aqueous solution by means of slow evaporation and slow cooling techniques. Single crystal XRD study reveals that the grown BGHC crystallizes in orthorhombic system with  space group P212121 and  the obtained unit cell parameters are a = 5.32 Å, b = 8.10 Å and c = 18.01 Å. Powder X – ray diffraction pattern of grown BGHC has been indexed. Functional groups present in the BGHC crystals were identified by FT – IR spectral analysis. The transmission and absorption spectra for the grown BGHC crystal shows that the lower cut off wavelength lies at 235 nm. The photoluminescence spectrum of the grown crystal was recorded. Mechanical hardness of the grown BGHC was determined and Vickers microhardness hardness number was calculated. Laser damage threshold study was carried out for the grown crystal using Nd:YAG laser. The thermal stability of the grown crystal was investigated using thermogravimetric analysis and the grown crystal is thermally stable up to 198 °C. Particle size dependent second harmonic generation efficiency of the grown crystal was examined by Kurtz and Perry powder technique using 1064 nm laser.

Growth of Ethyl-Para-Hydroxybenzoate Single Crystal and its Characterization

2012 ◽  
Vol 584 ◽  
pp. 121-125 ◽  
Author(s):  
N. Karunagaran ◽  
P. Ramasamy
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Grown Crystal ◽  
Vickers Microhardness ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Solution Technique ◽  
Slow Evaporation ◽  
X Ray Diffraction ◽  
X Ray

Ethyl-para-hydroxybenzoate (EHB) single crystals have been grown by slow evaporation solution technique (SEST) using methanol as a solvent. The grown crystal was subjected to single crystal X-ray diffraction analysis, confirming that the crystal belongs to monoclinic structure. The grown crystal was characterized by powder X-ray diffraction analysis. The functional groups present in the EHB crystal have been identified using FTIR spectrum analysis. The laser damage threshold of EHB crystal was measured. The mechanical strength of the grown EHB crystal was measured using Vickers microhardness, no cracks have been observed up to 100 g of load. The optical transparency of the grown EHB crystal has been measured by UV-Vis-NIR spectrophotometer. The refractive index of grown EHB single crystal is 1.6610. The dielectric permittivity and dielectric loss of the EHB single crystal were studied as function of frequency and temperature. The thermogravimetric analysis (TG) and differential thermal analysis (DTA) were studied. The melting point of EHB was 123°C. The luminescence behavior of EHB single crystal has been analyzed by photoluminescence analysis.

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