Linear-nonlinear optical, dielectric and surface microscopic investigation of KH<sub>2</sub>PO<sub>4</sub> crystal to uncover the decisive impact of dopant glycine

Khan, Imran Mahmood; Kalainathan, S.; Baig, M.I.; Shkir, Mohd.; AlFaify, S.; Ghramh, Hamed A.; Shkir, Mohd.

doi:10.2478/msp-2018-0073

Cited by 20 publications

(3 citation statements)

References 52 publications

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“…The εr is consequence of electronic, ionic, dipolar and space charge polarization. As thermal energy is provided to the crystal its εr is largely contributed by activeness of space charge polarization and so it is witnessed that the εr of studied crystals significantly enlargement with increase in temperature (9) . The lower dielectric constant indicates that the material offers less power consumption, low RC delay and minimum crass talk which are most desirable factors for designing various photonic devices (10,11) .…”

Section: Dielectric Propertiesmentioning

confidence: 99%

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Jebaraj¹,

Sivashankar²

2022

IJST

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Objectives: To grow crystal of inorganic material Rubidium sulfate by doping with an organic material L-leucine. Methods: Crystal has been grown by solution method. Crystallographic studies were done. Mechanical studies were carried out to find the mechanical strength and other parameters. Dielectric studies of L-leucine doped rubidium sulfate crystals were carried out to evaluate dielectric constant, dielectric loss and activation energy. UV-visible-NIR spectral studies were done in the wavelength range 200-1100 nm. Second order Non Linear Optical (NLO) studies of the grown crystal of LLRS were carried out by Kurtz-Perry technique. Findings: The grown LLRS crystal is observed to be crystallizing in orthorhombic structure by single crystal XRD studies. The optical band gap of LLRS crystal was found to be slightly more than that of undoped rubidium sulphate crystal. The SHG efficiency of LLRS crystal is observed to be 0.61 times that of the reference KDP sample. Dielectric parameters are found to decrease with increase in frequency. Dielectric constant and dielectric loss factor increase when the temperature of the samples increases. AC conductivity increases with increase of temperature. Activation energy is increasing when the frequency increases. The band gap value is found to be 4.43 eV for undoped rubidium sulfate crystal. For L-leucine doped rubidium sulfate (LLRS) crystal, the optical band gap is 4.48 eV. From the Microhardness teat, it is observed that the hardness increases with increase of the applied load for both the samples and this is due to reverse indentation size effect. Novelty: In this study, as a novel work, a very first attempt has been made to combine an organic material L-leucine with an inorganic crystal viz. rubidium sulfate to alter its physical and chemical properties.

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Section: Dielectric Propertiesmentioning

confidence: 99%

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Jebaraj¹,

Sivashankar²

2022

IJST

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“…Secondly, hardness increases with increasing applied load. This is known as reverse indentation size effect (RISE) [34,35]. In this method a diamond indenter is used in the form of a pyramid with a square base and an angle of 136°b etween opposite faces subjected to a test force of between 25 and 100 gm.…”

Section: Vickers Hardness Testmentioning

confidence: 99%

Growth and study of nonlinear optical P-dimethyl-aminobenzaldehyde crystal for photonic device application

Kulshrestha

Shrivastava

2019

Phys. Scr.

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Pera dimethyl-aminobenzaldehyde (p-DMAB) is a well known aromatic compound with nonlinear optical properties in various application fields such as optoelectronics, photonics etc. The single crystal of p-DMAB is grown by slow evaporation technique (constant temperature bath) at room temperature. These grown crystals are good in size with transparent appearance. The grown crystals are characterized using x-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, elemental analysis, UV-spectroscopy, second harmonic generation (SHG), optical limiter behavior, Vickers hardness, scanning electron microscopy (SEM). Single crystal XRD provides information about the crystal structure. The powder XRD shows that material is crystalline in nature. FTIRspectroscopy provides information about the relevant functional group present in the compound. Carbon-hydrogen-nitrogen analysis shows appropriate composition of these elements within this material. UV-vis study reveals that materials have wide window over the entire visible region. The observed order of refractive index points their use in anti-refracting coating devices. Good linear polarisability, susceptibility, optical conductivity data are also appropriate to decide their use in optical device fabrications. Wider optical band gap described dielectric behavior of material. SHG test shows that material has 2.03 times greater efficiency than the reference material KDP. Moreover the emission of green light indicates that the material can be used to develop green-blue laser. Optical limiter behavior shows that material is suitable for fabrication of an optical limiter device. The Vicker's microhardness study was also carried out on the sample. Vickers hardness test shows increment in hardness, yield strength and stiffness of material. SEM images show smooth morphology at different magnifications.

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“…The high-power lasers used in the inertial confinement fusion (ICF) system worldwide need large KDP-type crystals as nonlinear crystals on account of their exceptional properties [1][2][3][4][5][6] . The major limitation to growing such large KDP-type crystals by the traditional method is the slow growth rate, leading to a growth cycle of 1-2 years [7][8][9][10][11] . Fortunately, the 'point-seed' rapid growth method was developed in the 1980s [12,13] .…”

Section: Introductionmentioning

confidence: 99%

Rapid growth of a long-seed KDP crystal

Chen

Wang

et al. 2020

High Pow Laser Sci Eng

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To reduce the seed length while maintaining the advantages of the cuboid KDP-type crystal, a long-seed KDP crystal with size $471~\text{mm}\times 480~\text{mm}\times 400~\text{mm}$ is rapidly grown. With almost the same high cutting efficiency to obtain third harmonic generation oriented samples, this long-seed KDP-type crystal can be grown with a shorter seed than that of the cuboid KDP-type crystal. The full width at half maximum of the high-resolution X-ray diffraction of the (200) crystalline face is 28.8 arc seconds, indicating that the long-seed KDP crystal has good crystalline quality. In the wavelength range of 377–1022 nm, the transmittance of the long-seed KDP crystal is higher than 90%. The fluence for the 50% probability of laser-induced damage (LID) is $18.5~\text{J}/\text{cm}^{2}$ (3 ns, 355 nm). Several test points survive when the laser fluence exceeds $30~\text{J}/\text{cm}^{2}$ (3 ns, 355 nm), indicating the good LID performance of the long-seed KDP crystal. At present, the growth of a long-seed DKDP crystal is under way.

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Linear-nonlinear optical, dielectric and surface microscopic investigation of KH₂PO₄ crystal to uncover the decisive impact of dopant glycine

Cited by 20 publications

References 52 publications

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Growth and study of nonlinear optical P-dimethyl-aminobenzaldehyde crystal for photonic device application

Rapid growth of a long-seed KDP crystal

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Linear-nonlinear optical, dielectric and surface microscopic investigation of KH2PO4 crystal to uncover the decisive impact of dopant glycine

Cited by 20 publications

References 52 publications

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Investigations on the Growth and Characterization of L-Leucine Doped Rubidium Sulfate Nonlinear Optical Single Crystal

Growth and study of nonlinear optical P-dimethyl-aminobenzaldehyde crystal for photonic device application

Rapid growth of a long-seed KDP crystal

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Product

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Linear-nonlinear optical, dielectric and surface microscopic investigation of KH₂PO₄ crystal to uncover the decisive impact of dopant glycine