Saturable and reverse saturable absorption of a linear polymer in dimethylformamide

Gao, Yachen; Chang, Qing; Ye, H.; Jiao, Weiyan; Ye, Song; Wang, Y.; Qin, Jingui

doi:10.1007/s00340-007-2687-6

Cited by 24 publications

(12 citation statements)

References 15 publications

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“…[7][8][9][10][11] Due to architectural flexibility and ease of manufacturing the NLO devic-es, organic materials with extensively delocalized π electrons have attracted significant attention due to their large NLO susceptibility. [12][13][14][15] The advantage of the organic compounds over the inorganic materials is that NLO properties can be manipulated, by changing the substituents and the functional groups on the starting reactants. The NLO response of the organic compounds to the action of an applied electric field is related to the relocation of the π-electron.…”

Section: Introductionmentioning

confidence: 99%

Third-Order Nonlinear Optical Properties of a Carboxylic Acid Derivative

Valverde

Castro²,

Vaz³

et al. 2018

ACSi

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We report a study of the structural and electrical properties of a carboxylic acid derivative (CAD) with structural formula C 5 H 8 O 2 ((E)-pent-2-enoic acid). Using the Møller-Plesset Perturbation Theory (MP2) and the Density Functional Theory (DFT/CAM-B3LYP) with the 6-311++G(d,p) basis set the dipole moment, the linear polarizability and the first and second hyperpolarizabilities are calculated in presence of static and dynamic electric field. Through the supermolecule approach the crystalline phase of the carboxylic acid derivative is simulated and the environment polarization effects on the electrical parameters are studied. Static and dynamic estimation of the linear refractive index and the third-order nonlinear susceptibility of the crystal are obtained and compared with available experimental results. The characteristic vibrational modes and functional groups present in CAD were analyzed by Fourier Transform Infrared Spectrum (FT-IR) in the region of 400-4000 cm-1. Through the Hirshfeld surface analysis the molecular structure and the vibrational modes properties of the CAD crystal are explored. The effects of solvent medium on the molecular properties are taken into account through the Polarizable Continuum Model (PCM). Also, the frontiers molecular orbitals, the band gap energy, and the global chemical reactivity descriptors are discussed. All the properties studied suggest that the present material may be considered for nonlinear optical material.

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Section: Introductionmentioning

confidence: 99%

Third-Order Nonlinear Optical Properties of a Carboxylic Acid Derivative

Valverde

Castro²,

Vaz³

et al. 2018

ACSi

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show abstract

“…[ 17 , 18 ]. Especially, organic materials with extensively delocalized π-electrons have received significant attention due to their large NLO susceptibilities, architectural flexibility and easy fabrication of NLO devices [ 19 – 23 ]. NLO effects in organic molecules are very large as compared to inorganic molecules.…”

Section: Introductionmentioning

confidence: 99%

Physicochemical and Nonlinear Optical Properties of Novel Environmentally Benign Heterocyclic Azomethine Dyes: Experimental and Theoretical Studies

et al. 2016

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Novel heterocyclic azomethine dyes were prepared by the reaction of anthracene-9-carbaldehyde with different heterocyclic amines under microwave irradiation. Structures of the azomethine dyes were confirmed by the elemental analysis, mass spectrometry and several spectroscopic techniques. We studied absorbance and fluorescence spectra of the azomethine dyes in various solvents. They are found to be good absorbers and emitters. We also report photophysical properties like, extinction coefficient, oscillator strength, stokes shift and transition dipole moment. This reflects physicochemical behaviors of synthesized dyes. In addition, their intramolecular charge transfer and nonlinear optical properties, supported by natural bond orbital technique, were also studied computationally by density functional theory. The negative nonlinear refractive index and nonlinear absorption coefficient were measured for these dyes using the closed and open aperture Z-scan technique with a continuous wave helium-neon laser. These are found to vary linearly with solution concentration.

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“…Such an interesting effect can be used for optical pulse compressor, optical switching, and laser pulse narrowing [17]. Switchover from SA to RSA on increase of the input intensity has been observed in various materials under nanosecond and picosecond pulse excitation [18,19]. To rule out the influence of solvent effect, measurement was done on pure chloroform by z-scan under the same conditions.…”

Section: Resultsmentioning

confidence: 99%