Synthesis, growth, structure, mechanical and optical properties of a new semi-organic 2-methyl imidazolium dihydrogen phosphate single crystal

Nagapandiselvi, P.; Baby, C.

doi:10.1016/j.materresbull.2016.04.026

Cited by 29 publications

(6 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The absolute value of χ (3) was determined as,

χ^{((), 3)} = \sqrt{R e {(χ^{(3)})}^{2} + I m {(χ^{(3)})}^{2}}

where C is velocity of light and n o is linear refactive index of the sample. The obtained third order susceptibility values were compared with the other crystals (shown in Figure ) and the doped crystals which has higher magnitude due to the displacement of electron clouds from donor to acceptor, a consequence of electronegativity . From the analysis it was concluded that the alkali metal doped crystal could be a suitable material for optical limiting applications.…”

Section: Resultsmentioning

confidence: 99%

“…Generally, the value of S is calculated as,

S = 1 - e x p (\frac{- 2 r_{a}^{2}}{W_{a}^{2}})

where r a (2 mm) is aperture radius and w a (3.3 mm) is beam radius of the aperture. The third order nonlinear refactive index, effective thickness and absorption co‐efficient were evaluated and summarized in Table , which was used to calculate the real and imaginary part of third order nonlinear susceptibility using the relation,

Re χ^{((), 3)} = 2 {normaln}_{o}^{2} C ε_{normalo} {normaln}_{2}

Im χ^{((), 3)} = \frac{{normaln}_{o}^{2} ε_{normalo} normalC λ β}{2 π}

where ε o is permitivity at vacuum. The absolute value of χ (3) was determined as,

χ^{((), 3)} = \sqrt{R e {(χ^{(3)})}^{2} + I m {(χ^{(3)})}^{2}}

where C is velocity of light and n o is linear refactive index of the sample.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Remarkable Enhancement on Optical Properties of Alkali Metals Doped Anthracene Crystals

Nagarajan¹,

Ananth

Ramaswamy³

2017

Crystal Research and Technology

View full text Add to dashboard Cite

Alkali metals (Li, Na, K) doped anthracene high quality organic crystals were grown by slow evaporation at ambient environment. The relative occupancy of dopants and its influence of AN lattice phonons has been probed using elemental and diffraction analysis respectively. These alkali metal ions act as an efficient optically active sites, thereby projecting enhancement in UV region and photoluminescence studies. The nonlinear susceptibility (χ(3)) have been evaluated for doped crystals from Z ‐ scan technique and the values of these parameters found to be 10−2 esu which was higher than reported organic crystals. The incorporation of the alkali metal ions progressively alters melting point, overtone vibrational bands, mechanical strength and nonlinear optical properties for the grown crystals. The improved thermal, mechanical, linear and nonlinear optical properties of doped crystals make it as a better candidate for optoelectronic applications.

show abstract

“…The absolute value of χ (3) was determined as,

χ^{((), 3)} = \sqrt{R e {(χ^{(3)})}^{2} + I m {(χ^{(3)})}^{2}}

Section: Resultsmentioning

confidence: 99%

“…Generally, the value of S is calculated as,

S = 1 - e x p (\frac{- 2 r_{a}^{2}}{W_{a}^{2}})

Re χ^{((), 3)} = 2 {normaln}_{o}^{2} C ε_{normalo} {normaln}_{2}

Im χ^{((), 3)} = \frac{{normaln}_{o}^{2} ε_{normalo} normalC λ β}{2 π}

where ε o is permitivity at vacuum. The absolute value of χ (3) was determined as,

χ^{((), 3)} = \sqrt{R e {(χ^{(3)})}^{2} + I m {(χ^{(3)})}^{2}}

where C is velocity of light and n o is linear refactive index of the sample.…”

Section: Resultsmentioning

confidence: 99%

Remarkable Enhancement on Optical Properties of Alkali Metals Doped Anthracene Crystals

Nagarajan¹,

Ananth

Ramaswamy³

2017

Crystal Research and Technology

View full text Add to dashboard Cite

show abstract

“…A valley in the OA curve, as seen in Figure confirms the occurrence of strong RSA with positive nonlinear absorption coefficient (β) in the DEBM crystal. As can be seen, in the DEBM crystal, the absorption of the molecule in excited state is relatively higher than its ground state, which ensure the strong RSA effect. − With this respect, its exhibit exquisitely behavior in optical limiting, photonic and medical applications. , …”

Section: Resultsmentioning

confidence: 99%

Bulk Crystal Growth, Optical, Electrical, Thermal, and Third Order NLO Properties of 2-[4-(Diethylamino)benzylidene]malononitrile (DEBM) Single Crystal

Asokan

Kalainathan

2017

J. Phys. Chem. C

View full text Add to dashboard Cite

Bulk organic nonlinear optical (NLO) single crystals of DEBM (2-[4-(diethylamino)benzylidene]malononitrile), with sizes up to 22 × 5 × 12 mm 3 have been grown in ethyl acetate solution by the slow evaporation method. The lattice parameters and crystalline purity of the titled crystal were measured by single crystal X-ray diffraction and powder XRD, respectively. The morphology of the grown crystal was portrayed by WinXMorph program. Fourier transform infrared (FT-IR) spectral studies have been performed to identify the functional groups. The molecular structure was confirmed through 1 H NMR. UV−vis−NIR spectral analysis signifies that the DEBM crystal is transparent in entire visible and near-infrared region, which has a lower cutoff wavelength around 476.8 nm. The optical band gap (E g ) was estimated from the Tauc plot and was found to be about 2.68 eV. The low value of the dielectric constant (ε r ) of DEBM suggests that it has a possible strategy toward the microelectronics industry. Thermal stability and melting point (137.8 °C) were studied with TGA−DSC analysis. The laserinduced damage threshold (LDT) experiments showed that the grown DEBM bulk crystal possess an excellent resistance to laser radiation with a high threshold up to 1.95 GW cm −2 , it is still better compared to other organic and inorganic NLO materials. The third-order optical nonlinearities of the DEBM crystal was confirmed by the single beam Z-scan technique. All these results demonstrate that the organic crystal DEBM is promising for NLO applications.

show abstract

“…BGA crystal's nonlinear optical susceptibility (χ (3) ) is 2.760x10 -3 esu. It is concluded that the BGA crystal has an intense reverse saturable absorption effect (Hoffman et al1989;Nagapandiselvi et al 2016), which makes it appropriate for the photonics, optical logic gates, nonlinear spectroscopy, pulse compression, and biomedical applications (Sajan et al 2011;Saisanthosh Kumar et al 2007). Further, the BGA crystal is suitable for optical switching, we calculate the two figure of merit (FOM).…”

Section: Thermal Analysismentioning

confidence: 99%

Benzimidazolium gallate: organic crystal for photonic and optoelectronic applications

Catherine,

Gunasekaran,

Praveen Kumar

2024

Opt Quant Electron

View full text Add to dashboard Cite

Solvent evaporation was used to create a novel organic optical crystal of Benzimidazolium gallate (BGA). The size of unit cells was determined using XRD analysis.FT-IR spectrum analysis revealed chemical bonds' vibrational behavior and their functional groups' existence. Optical transparency and optical bandgap (3.66 eV) were observed by the UV-Visible-near Infrared spectral analysis. TG/DSC curves show that decomposition is exhibited at 215 0 C. Dielectric experiments on the BGA crystal were performed at ambient temperature. HR-SEM analysis shows the crystal's nature and surface shape. The Z-scan process explored the BGA crystal's nonlinearity, and the crystal is suitable for photonic, optoelectronic, and optical-limiting applications.

show abstract

Synthesis, growth, structure, mechanical and optical properties of a new semi-organic 2-methyl imidazolium dihydrogen phosphate single crystal

Cited by 29 publications

References 37 publications

Remarkable Enhancement on Optical Properties of Alkali Metals Doped Anthracene Crystals

Remarkable Enhancement on Optical Properties of Alkali Metals Doped Anthracene Crystals

Bulk Crystal Growth, Optical, Electrical, Thermal, and Third Order NLO Properties of 2-[4-(Diethylamino)benzylidene]malononitrile (DEBM) Single Crystal

Benzimidazolium gallate: organic crystal for photonic and optoelectronic applications

Contact Info

Product

Resources

About