Optical limiting behavior of new fullerene derivatives

Allaf, A.W.; Zidan, M.D.

doi:10.1016/j.optlaseng.2004.06.001

Cited by 13 publications

(5 citation statements)

References 15 publications

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“…In 1991, Hoshi et al used a Nd:YAG laser to study the second- and third-harmonic generation in C 60 thin films and found a third-order response of 2 × 10 −10 esu. In 1992, Tutt and Kost used 8-ns pulses to investigate the optical limiting effect in C 60 , with saturation thresholds comparable to or lower than existing materials, which was also found in new fullerene derivatives. , McLean et al used 532-nm and 8-ns and 30-ps laser pulses to further study the fluence dependence in a C 60 -toluene solution . Its potential impact has been recently reviewed by Huo et al and Martin et al In 1997, Rustagi et al presented a detailed review of nonlinear optical properties of fullerenes.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Optical Response and Ultrafast Dynamics in C₆₀

Zhang

George

2009

J. Phys. Chem. A

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Crossed molecular beams experiments were conducted to investigate the chemical dynamics of the reaction of dicarbon molecules, C(2)(X(1)Sigma(g)(+)/a(3)Pi(u)), with diacetylene, C(4)H(2)(X(1)Sigma(g)(+)) at two collision energies of 12.1 and 32.8 kJ mol(-1). The dynamics were found to be indirect, involved C(6)H(2) intermediates, and were dictated by an initial addition of the dicarbon molecule to the carbon-carbon triple bond of diacetylene. The initial collision complexes could isomerize. On the singlet surface, the resulting linear triacetylene molecule (C(6)H(2)(X(1)Sigma(g)(+))) decomposed without an exit barrier to form the linear 1,3,5-hexatriynyl radical (C(6)H(X(2)Pi)). On the triplet surface, the dynamics suggested at least a tight exit transition state involved in the fragmentation of a triplet C(6)H(2) intermediate to yield the 1,3,5-hexatriynyl radical (C(6)H(X(2)Pi)) plus atomic hydrogen. On the basis of the experimental data, we recommend an experimentally determined enthalpy of formation of the 1,3,5-hexatriynyl radical of 1014 +/- 27 kJ mol(-1) at 0 K. Our experimental results and the derived reaction mechanisms gain full support from electronic structure calculations on the singlet and triplet C(6)H(2) potential-energy surfaces. The identification of the 1,3,5-hexatriynyl radical under single collision conditions implies that the neutral-neutral reaction of dicarbon with diacetylene can lead to the formation of 1,3,5-hexatriynyl radicals in the interstellar medium and possibly in the hydrocarbon-rich atmospheres of planets and their moons such as Saturn's satellite Titan.

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Section: Introductionmentioning

confidence: 99%

Nonlinear Optical Response and Ultrafast Dynamics in C₆₀

Zhang

George

2009

J. Phys. Chem. A

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“…Fig.16 shows the limiting threshold value which is an input power value to reduce the transmittance up to it is half value and decreases with increasing the concentration, these values are shown in Table 4. [57][58][59][60], nonlinear absorption (two-photon absorption (TPA) and RSA [61][62][63][64], and nonlinear refraction (electronics or thermal effects) [65,66]. In the present study CW laser sources are used, therefore, the origin of nonlinearity is thermal in nature.…”

Section: Optical Limiting Behaviormentioning

confidence: 99%

Second-order hyperpolarizability, Figure of merit and nonlinear optical properties of novel organic compound doped conducting polymer film

Al-Hazam

Alfahed

Badran

2021

Preprint

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The structural characterization of a new organic compound (3, 5-bis (4-chlorophenyl)-4,5-dihydro-1H-Pyrazole) was analyzed experimentally by 1HNMR and FT-IR spectroscopic technique. The analysis of HOMO-LUMO and natural bond orbital are investigated to study the charge transfer interactions which is leading to the properties of nonlinear behavior. linear optical properties of anew organic compound / Poly (O- Methoxyaniline) (POMA) film was studied using Wemble and Didomenico (WD) technique to estimate the refractive index n and other optical constant such as the oscillation energy E0, the dispersion energy Ed, and the lattice dielectric constant. Measurements of the thermally induced optical nonlinearity of novel organic compound (3, 5-bis (4-chlorophenyl)-4, 5-dihydro-1H- Pyrazole) in an organic solvent (N-methyl-2-pyrrolidone) NMP)) was studied through an excitation source (continuous wave diode laser at the wavelength of 473 nm) in the case of the solution and a conducting polymer film. The Z-scan technique was used to measure the nonlinear refractive index )) to obtain the optical response of prepared material. The prepared sample illustrated negative and large values in the order of 10− 7 cm2/W and reverse saturable absorption )RSA) with large values of the nonlinear absorption coefficient in the order of 10− 3 cm/W. The nonlinear refractive index was determined and varied as a response to different concentrations. The determination of the figure of merit (W) and nonlinear coefficients indicate that the compound is a promising candidate for applications in the nonlinear optics field.

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“…In recent years, a considerable effort has been devoted to investigations of the phenomenon of the optical limiting (OL) in various materials and media in order to use them in some applications. [6][7][8][9][10][11][12] For instance, studying the OL in suspensions of carbon nanoparticles is interesting for creation of the reliable limiters of the laser radiation power in a broad spectral range and development the new methods of control over the parameters of the laser pulses. Conventionally, the OL is studied using the so called z-scanning technique, according to which the optical * Author to whom correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Application of Nonlinear Light Scattering in Nanocarbon Suspensions for Adjustment of Laser Pulse Duration

Vanyukov¹,

Mogileva²,

Mikheev³

et al. 2012

Journal of Nanoelectronics and Optoelectronics

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It is shown that the scanning an optical cell containing the aqueous suspension of multiwalled carbon nanotubes with the focused laser beam along the optical axis leads to an increase of the nonlinear scattering. This is accompanied by a smooth change of the nanosecond laser pulse duration transmitted through the suspension. A pulse shortening occurs as the cell approaching the beam waist due to cutting off the trailing part of the incident laser pulse. Thus the full width at half maximum of the transmitted laser pulse through suspension decreases with the increase of the incident laser power density. In experiments the incident YAG: Nd 3+-laser passive Q-switched pulses of 16 ns duration have been smoothly adjusted in the range of 16-10 ns.

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Optical limiting behavior of new fullerene derivatives

Cited by 13 publications

References 15 publications

Nonlinear Optical Response and Ultrafast Dynamics in C₆₀

Nonlinear Optical Response and Ultrafast Dynamics in C₆₀

Second-order hyperpolarizability, Figure of merit and nonlinear optical properties of novel organic compound doped conducting polymer film

Application of Nonlinear Light Scattering in Nanocarbon Suspensions for Adjustment of Laser Pulse Duration

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Optical limiting behavior of new fullerene derivatives

Cited by 13 publications

References 15 publications

Nonlinear Optical Response and Ultrafast Dynamics in C60

Nonlinear Optical Response and Ultrafast Dynamics in C60

Second-order hyperpolarizability, Figure of merit and nonlinear optical properties of novel organic compound doped conducting polymer film

Application of Nonlinear Light Scattering in Nanocarbon Suspensions for Adjustment of Laser Pulse Duration

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Nonlinear Optical Response and Ultrafast Dynamics in C₆₀

Nonlinear Optical Response and Ultrafast Dynamics in C₆₀