Intensity-dependent absorption and resonant optical nonlinearity of C60 and C70 solutions

Henari, Fryad Z.; Callaghan, J.; Stiel, H.; Blau, Werner J.; Cardin, D. J.

doi:10.1016/0009-2614(92)80061-f

Cited by 133 publications

(58 citation statements)

References 18 publications

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“…SA and RSA have been found in many materials such as porphyrins [12,13], metal phthalocyanines [14] and fullerenes [19]. The type of behaviour observed depends on the wavelength probed relative to the ground state absorption.…”

Section: Non-linear Optical Studiesmentioning

confidence: 98%

The Electronic and Non-linear Optical Properties of Oxo-titanium Phthalocyanines

Henari

Davey

Blau

et al. 1999

J. Porphyrins Phthalocyanines

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The valence electronic properties of some unsubstituted and peripherally substituted oxo-titanium phthalocyanines are reported. Semiempirical quantum chemical calculations show that the nature of peripheral substituents has a strong bearing on the valence electronic properties, including the state dipole moments and absorption wavelength. The non-linear optical response was measured around the the Q-band resonance. The effect of different substituents and substitution patterns on the non-linear behaviour of the samples was determined. The combined results suggest that tuning of electronic and optical properties is effectively achieved by functionalization of the edges of the conjugated ring.

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Section: Non-linear Optical Studiesmentioning

confidence: 98%

The Electronic and Non-linear Optical Properties of Oxo-titanium Phthalocyanines

Henari

Davey

Blau

et al. 1999

J. Porphyrins Phthalocyanines

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“…A successful optical limiter should strongly attenuate intense and potentially dangerous laser beams, while exhibiting high-transmittance for low-intensity ambient light. Up to now a number of organic and inorganic materials, including fullerenes, 7,8,26 phthalocyanines, [27][28][29][30] porphyrins, 31,32 inorganic nanoparticles 12,33,34 and metal complexes and clusters 35 have exhibited strong nonlinear extinction (viz., absorption and/or scattering) for high-intensity light and hence could be considered as viable optical limiting materials. In the past decade, CNTs have been extensively studied as an optical limiting material.…”

Section: Optical Limitingmentioning

confidence: 99%

Carbon nanotubes and nanotube composites for nonlinear optical devices

2009

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Carbon nanotubes possess not only outstanding mechanical, electrical and thermal properties but also unique nonlinear optical properties. In this Feature Article, we review the recent developments of the carbon nanotube and its composites for nonlinear optical applications. Two research hot spots are discussed: optical limiting for laser protection and the saturable absorber as a mode-locking component for ultra-short pulsed lasers. The physical mechanism, materials and devices are intensively introduced for each application. All of the investigations indicate that the carbon nanotube is one of the main competitive candidates for next generation of photonic components.

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“…[18][19][20][21][22] The studies can be traced back to the discovery 23 of the fullerene structure of C 60 , and, thereafter, of their novel properties such as high temperature superconductivity. [24][25][26] Besides the best known "bucky ball" C 60 , a wide range of fullerenes with "magic numbers" has been predicted theoretically and observed experimentally. 22,[27][28][29] Fullerenes are graphitic hollow-cage structures incorporating exactly 12 pentagons without restriction of the number of hexagon.…”

Section: Introductionmentioning

confidence: 99%

Ab initio calculation of bowl, cage, and ring isomers of C20 and C20−

An¹,

Gao²,

Bulusu³

et al. 2005

The Journal of Chemical Physics

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High-level ab initio calculations have been carried out to reexamine relative stability of bowl, cage, and ring isomers of C 20 and C 20 − . The total electronic energies of the three isomers show different energy orderings, strongly depending on the hybrid functionals selected. It is found that among three popular hybrid density-functional ͑DF͒ methods B3LYP, B3PW91, PBE1PBE, and a new hybrid-meta-DF method TPSSKCIS, only the PBE1PBE method ͑with cc-pVTZ basis set͒ gives qualitatively correct energy ordering as that predicted from ab initio CCSD͑T͒/cc-pVDZ ͓CCSD͑T͒-coupled-cluster method including singles, doubles, and noniterative perturbative triples; cc-pVDZ-correlation consistent polarized valence double zeta͔ as well as from MP4͑SDQ͒/cc-pVTZ ͓MP4-fourth-order Moller-Plesset; cc-pVTZ-correlation consistent polarized valence triple zeta͔ calculations. Both CCSD͑T͒ and MP4 calculations indicate that the bowl is most likely the global minimum of neutral C 20 isomers, followed by the fullerene cage and ring. For the anionic counterparts, the PBE1PBE calculation also agrees with MP4/cc-pVTZ calculation, both predicting that the bowl is still the lowest-energy structure of C 20 − at T =0 K, followed by the ring and the cage. In contrast, both B3LYP/cc-pVTZ and B3PW91/cc-pVTZ calculations predict that the ring is the lowest-energy structure of C 20 − . Apparently, this good reliability in predicting the energy ordering renders the hybrid PBE method a leading choice for predicting relative stability among large-sized carbon clusters and other carbon nanostructures ͑e.g., finite-size carbon nanotubes, nano-onions, or nanohorns͒. The relative stabilities derived from total energy with Gibbs free-energy corrections demonstrate a changing ordering in which ring becomes more favorable for both C 20 and C 20 − at high temperatures. Finally, photoelectron spectra ͑PES͒ for the anionic C 20 − isomers have been computed. With binding energies up to 7 eV, the simulated PES show ample spectral features to distinguish the three competitive C 20 − isomers.

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Intensity-dependent absorption and resonant optical nonlinearity of C60 and C70 solutions

Cited by 133 publications

References 18 publications

The Electronic and Non-linear Optical Properties of Oxo-titanium Phthalocyanines

The Electronic and Non-linear Optical Properties of Oxo-titanium Phthalocyanines

Carbon nanotubes and nanotube composites for nonlinear optical devices

Ab initio calculation of bowl, cage, and ring isomers of C20 and C20−

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