Nonlinear responses and optical limiting behavior of Basic Violet 16 dye under CW laser illumination

Rashidian, Morvarid; Dorranian, Davoud; Darani, S. Ahmadi; Saghafi, Saiedeh; Ghoranneviss, M.

doi:10.1016/j.ijleo.2008.05.001

Cited by 64 publications

(18 citation statements)

References 7 publications

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“…Separate optical limiting experiment was performed on pure methanol and it is found to have no contribution to optical limiting in the power range of the laser used. The dye investigated here is very weakly fluorescent and is nonfluorescent at the wavelength studied, optimizing the conversion of the absorption energy into heat [24]. The optical limiting effect shows an increase with increasing the concentration of the dye solution as shown in Fig.…”

Section: Resultsmentioning

confidence: 91%

“…In liquids, where the thermal expansion is large, high absorbance of the nonlinear material at the corresponding wavelength leads to increase in temperature and density of the sample. Heating due to laser absorption is responsible for changing the absorption coefficient and optical limiting effect [24]. Separate optical limiting experiment was performed on pure methanol and it is found to have no contribution to optical limiting in the power range of the laser used.…”

Section: Resultsmentioning

confidence: 99%

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Nonlinear Characterization of Safranin O Dye for Application in Optical Limiting

2011

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The optical nonlinearity of safranin O dye in methanol solution at different concentrations and as a solid film with polymethylmethacrylate (PMMA) has been studied using cw Nd-YAG laser at 532 nm as the source of excitation. The optical responses were characterized by measuring the intensity dependent refractive index (n 2 ) of the medium using the Z-scan technique. The open aperture Z-scan trace of the dye in solution and solid sample displayed saturable absorption. The closed aperture Z-scan trace of the dye exhibited a negative (defocusing) nonlinearity. The nonlinear refractive index was found to vary with concentration. Optical limiting characteristics of the dye at various concentrations in solution were studied. The nonlinearity appears to be of thermal origin.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Nonlinear Characterization of Safranin O Dye for Application in Optical Limiting

2011

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“…Samples were taken at different contact times to determine the time required to reach equilibrium. After centrifugation at 10000 rpm, the absorbance of the supernatant was measured at 530 nm (Rashidian et al, 2009) (Spekol-1100 UV-Vis spectrophotometer) and then converted into concentration.…”

Section: Methodsmentioning

confidence: 99%

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Fìl

Yılmaz

Bayar

et al. 2014

Braz. J. Chem. Eng.

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-In this study, color removal by absorption from synthetically prepared wastewater was investigated using montmorillonite clay by adsorption. As dyestuff Astrazon Red Violet 3RN (Basic Violet 16) was used. Experimental parameters selected were pH, temperature, agitation speed, initial dyestuff concentration, adsorbent dosage and ionic strength. It was established that adsorption rate increased with increasing pH, temperature, dye concentration and agitation speed, but decreased with increased ionic strength and adsorbent dosage. Adsorption equilibrium data obtained by a series of experiments carried out in a water bath were employed with common isotherm equations such as Langmuir, Freundlich, Temkin, Elovich and Dubinin-Radushkevich. It was found that the Langmuir equation appears to fit the equilibrium data better than the other models. Furthermore, the fit of the kinetic data to common kinetic models such as the pseudofirst-order, second-order, Elovich and intraparticle diffusion models was tested to elucidate the adsorption mechanism. Kinetic data conformed to the pseudo-second-order model, indicating chemisorptions. In addition, the thermodynamic parameters activation energy, Ea, enthalpy ΔH*, entropy, ΔS*, and free energy change, ΔG*, were calculated. The values of the calculated parameters indicated that physical adsorption of ARV on the clay was dominant and that the adsorption process was endothermic.

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“…4, one could deduce that the peak-valley difference for all investigated samples is C14 mm i.e., nearly 10 times Rayleigh range and hence confirming the presence of the thermal component; it is well established that a peak-to-valley separation larger than 1.7 z R is an indication of a Kerr type of nonlinearity [18]. As it was concluded in the above-mentioned natural dyes of Carmine and Safranin O, the organic dyes in solvent will have a tendency to form non-fluorescent dimers optimizing the conversion of the absorption energy into heat [24]. With increasing dye concentration, there is an increase in dimer concentration.…”

Section: Experiments and Discussionmentioning

confidence: 61%

“…The nonlinear optical properties, in addition to the optical limiting, were investigated by z-scan technique, which has the advantages of simplicity and high sensitivity, as well as enabling simultaneous measurement of the magnitude and sign of the nonlinear refractive index and the nonlinear absorption coefficient of the samples [16][17][18][19][20][21][22][23][24][25][26][27]. Basically, the method consists of translating a sample through the focus of a Gaussian beam and monitoring the changes in the far field intensity pattern (Fig.…”

Section: Experiments and Discussionmentioning

confidence: 99%

Z-scan and optical limiting properties of Hibiscus Sabdariffa dye

et al. 2014

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The intensity-dependent refractive index n 2 and the nonlinear susceptibility v (3) of Hibiscus Sabdariffa dye solutions in the nanosecond regime at 532 nm are reported. More presicely, the variation of n 2 , b, and real and imaginary parts of v (3) versus the natural dye extract concentration has been carried out by z-scan and optical limiting techniques. The third-order nonlinearity of the Hibiscus Sabdariffa dye solutions was found to be dominated by nonlinear refraction, which leads to strong optical limiting of laser.

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Nonlinear responses and optical limiting behavior of Basic Violet 16 dye under CW laser illumination

Cited by 64 publications

References 7 publications

Nonlinear Characterization of Safranin O Dye for Application in Optical Limiting

Nonlinear Characterization of Safranin O Dye for Application in Optical Limiting

Investigation of adsorption of the dyestuff astrazon red violet 3rn (basic violet 16) on montmorillonite clay

Z-scan and optical limiting properties of Hibiscus Sabdariffa dye

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