GROWTH AND CHARACTERIZATION OF A NEW SEMI-ORGANIC NON-LINEAR OPTICAL CRYSTAL L-ARGININE HYDROCHLOROFLUORIDE MONOHYDRATE (LAHClF)

2006 ◽  
Vol 13 (06) ◽  
pp. 803-808 ◽  
Author(s):  
R. SIDDHESWARAN ◽  
R. SANKAR ◽  
M. RATHNAKUMARI ◽  
P. MURUGAKOOTHAN ◽  
R. JAYAVEL ◽  
...  
Keyword(s):  
Second Harmonic ◽  
Nir Spectroscopy ◽  
Damage Threshold ◽  
Optical Transmittance ◽  
Laser Damage Threshold ◽  
X Ray Diffraction ◽  
Monoclinic Crystal ◽  
Non Linear ◽  
Linear Optical

A new non-linear optical mixed crystal of L-arginine hydrochlorofluoride monohydrate (LAHClF) has been grown by temperature lowering solution growth technique. The single crystal X-ray diffraction studies show that the LAHClF belongs to monoclinic crystal system. The optical transmittance of the crystal was studied by UV–Visible–NIR spectroscopy. Fourier transform infrared spectroscopy and thermal analysis were performed to study the molecular vibrations and thermal behavior of the crystals, respectively. The second harmonic generation intensity and laser damage threshold of the LAHClF crystal were measured. The mechanical strength of the material was determined by the Vickers hardness method.

Unidirectional growth and characterization of L-tartaric acid single crystals

2013 ◽  
Vol 46 (4) ◽  
pp. 993-998 ◽  
Author(s):  
K. Moovendaran ◽  
S. Natarajan
Keyword(s):  
Single Crystals ◽  
Tartaric Acid ◽  
Second Harmonic ◽  
Nir Spectroscopy ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Solution Technique ◽  
X Ray Diffraction ◽  
Second Harmonic Generation Efficiency ◽  
X Ray

Single crystals of L-tartaric acid (LTA), an organic nonlinear optical material, have been grown using a home-built crystal growth setup (the Moovendaran–Kalyanasundar–Natarajan setup). Crystals of LTA were also grown by the slow evaporation solution technique. These single crystals were characterized using single-crystal X-ray diffraction, high-resolution X-ray diffraction, and IR and UV–Vis–NIR spectroscopy. In addition, measurements of Vickers microhardness, laser damage threshold value and second harmonic generation efficiency are reported. Thermal, dielectric and photoluminescence studies were also carried out.

scholarly journals L-alaninium perrhenate: crystal structure and non-linear optical properties

2014 ◽  
Vol 12 (10) ◽  
pp. 1016-1022 ◽  
Author(s):  
Vitor Rodrigues ◽  
Maria Costa ◽  
Etelvina Gomes ◽  
Dmitry Isakov ◽  
Michael Belsley
Keyword(s):  
Crystal Structure ◽  
Optical Properties ◽  
Second Harmonic ◽  
Negative Ions ◽  
Damage Threshold ◽  
Linear Optics ◽  
Second Harmonic Generation Efficiency ◽  
Non Linear ◽  
Linear Optical Properties ◽  
Linear Optical

AbstractThe crystal structure and non-linear optical properties of L-alaninium perrhenate, C3H8NO2+ ReO4 −, are reported. The protonated amino acid and the perrhenate anion have their usual geometries. The three-dimensional hydrogen-bonded network can be seen as a stacking of layers parallel to the (100) planes. Each layer is formed by chains of alternating positive and negative ions along the b and c axes. Hydrogen bonding of adjacent layers forms alternating chains along the a axis. A high damage threshold and a second-harmonic generation efficiency three times that of KDP make this new material potentially useful in non-linear optics.

scholarly journals Growth and Characterizations of Organic NLO Imidazolium L-Tartrate (IMLT) Single Crystal

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Hiral Raval ◽  
B. B. Parekh ◽  
K. D. Parikh ◽  
M. J. Joshi
Keyword(s):  
Second Harmonic ◽  
Structural Parameters ◽  
Diffraction Method ◽  
Nir Spectroscopy ◽  
Optical Parameters ◽  
Dielectric Study ◽  
X Ray Diffraction ◽  
Monoclinic Crystal ◽  
Monoclinic Crystal Structure ◽  
Evaporation Technique

Good quality single crystals of organic imidazolium L-Tartrate (IMLT) are grown up from aqueous solution by slow solvent evaporation technique. Various structural parameters and monoclinic crystal structure have been confirmed using powder X-ray diffraction method. The presence of various functional groups has been identified by ATR-FTIR. UV-Vis-NIR spectroscopy has shown more than 60% of optical transparency with the lower UV cutoff at 245nm. The optical band gap value of the material is evaluated to be 4.8 eV. Other optical parameters such as refractive index, optical and electrical conductivity, Urbach energy, extinction coefficient, and optical and electrical susceptibility have been evaluated from transmission spectrum data. The above essential parameters manifest appropriate usage of IMLT as an NLO material. The thermogravimetric analysis indicates high thermal stability of material up to 214°C. Apart from that, the dielectric study at various temperatures confirms decrement of dielectric constant and dielectric loss at higher frequencies. The efficiency of Second Harmonic Generation (SHG) is found to be 3.5 times that of the KDP crystals. A range of analysis suggests suitability and potentiality of IMLT crystal for various optoelectronic applications.

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.

A non-linear optical crystal, Cd3Zn3(BO3)4

2003 ◽  
Vol 59 (11) ◽  
pp. i107-i108 ◽  
Author(s):  
Tongqing Sun ◽  
Feng Pan ◽  
Ruji Wang ◽  
Guangqiu Shen ◽  
Xiaoqing Wang ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Harmonic Generation ◽  
Nd:Yag Laser ◽  
Title Compound ◽  
Second Harmonic ◽  
X Ray Diffraction ◽  
X Ray ◽  
Non Linear ◽  
Optical Crystal ◽  
Linear Optical

The title compound, tricadmium trizinc tetraborate, Cd3Zn3(BO3)4, is a new non-linear optical (NLO) crystal and its structure has been determined by single-crystal X-ray diffraction. This compound is composed of planar [BO3]3− groups sharing O atoms with CdO4 or ZnO4 tetrahedra. The BO3 triangles are located on threefold axes and are arranged with nearly the same orientation. The Cd and Zn atoms are disordered on the same site in the proportion 1:1. A strong second harmonic generation of Nd:YAG laser radiation (λ = 1064 nm) has been observed for a crystal of the title compound.

Synthesis, structure and non-linear optical properties of new isostructural β-D-fructopyranose alkaline halide metal–organic frameworks: a theoretical and an experimental study

2017 ◽  
Vol 73 (4) ◽  
pp. 737-743 ◽  
Author(s):  
Domenica Marabello ◽  
Paola Antoniotti ◽  
Paola Benzi ◽  
Carlo Canepa ◽  
Leonardo Mortati ◽  
...  
Keyword(s):  
Optical Properties ◽  
Second Harmonic ◽  
Theoretical Calculations ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
Intrinsic Nature ◽  
Non Linear ◽  
Metal Organic ◽  
Linear Optical Properties ◽  
Linear Optical

In this work four metal–organic framework isomorphs, based on fructose and alkali-earth halogenides, were investigated to better understand the effect of the size of the cation and the different polarizability of the anion on the calculated hyperpolarizability and optical susceptibility, which are correlated to non-linear optical properties. The compounds were characterized by X-ray diffraction and the first hyperpolarizability and the second-order susceptibility were obtained from theoretical calculations. Furthermore, a new method to measure the second-harmonic (SH) efficiency on a small quantity of powder at different wavelengths of excitation was optimized and an attempt was made to assess the reduction of the SH intensity for small quantities of nano-crystals, in order to ascertain the possibility of applications in biological systems. The results of this work show that both the intrinsic nature of the anion and the induced dissociation of cations and anions by fructose play a role in the second-harmonic generating properties of such compounds.

Structural, Optical and Laser Damage Threshold Studies of 1, 10 Phenanthraline Doped Potassium Penta Borate (KB5) Single Crystals

2012 ◽  
Vol 584 ◽  
pp. 29-32
Author(s):  
K. Prabha ◽  
M. Ramesh Babu ◽  
Pappu Sagayaraj
Keyword(s):  
Grown Crystal ◽  
Damage Threshold ◽  
Laser Damage Threshold ◽  
Laser Damage ◽  
Solvent Evaporation Method ◽  
X Ray Diffraction ◽  
Unit Cell Parameters ◽  
X Ray ◽  
Cell Parameters

We concentrate on the low temperature slow solvent evaporation method and characterization of pure and 1, 10 phenanthraline doped KB5 and describe its potential as a non-linear optical material. The grown crystal has been subjected to single crystal X-ray diffraction analysis to identify the unit cell parameters and crystal system. The presence of carbon, hydrogen and oxygen content were confirmed by CHN analysis. The Kurtz’s-Perry powder SHG efficiency was determined for both pure and 1, 10 phenanthraline doped KB5 crystals as 1.6 and 2.2 times than that of pure KDP. Laser damage threshold studies of the pure and doped KB5 crystals have been found to be Q-Switched Nd-YAG laser.

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.

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