Techniques for nonlinear optical characterization of materials: a review

Araújo, Cid B. de; Gomes, Anderson S. L.; Boudebs, Georges

doi:10.1088/0034-4885/79/3/036401

Cited by 138 publications

(83 citation statements)

References 149 publications

(341 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The area is still very active and studies of MDNCs based on glasses and colloids were reported by many authors concerning the NL behavior of other metals than silver and gold as well as other NP geometries. The two NL optical techniques mostly used were the pump-and-probe and the Z-scan technique in various versions, as described in [79]. Although the environment influence has not been much considered, its influence may be one of the reasons for scattering of the values reported for silver and gold MDNCs.…”

Section: Optical Nonlinearity Of Spherical Nanoparticles Suspended Inmentioning

confidence: 99%

See 1 more Smart Citation

High-order optical nonlinearities in plasmonic nanocomposites—a review

2017

View full text Add to dashboard Cite

Section: Optical Nonlinearity Of Spherical Nanoparticles Suspended Inmentioning

confidence: 99%

“…To certify the fast NL response of the MDNCs, a Kerr shutter experiment [79,211] was performed under the same conditions used in previous experiments. Figure 17(d) shows the Kerr shutter signal due to the fast NL response of the free electrons in the NPs.…”

Section: All-optical Switches Based On Metal-dielectric Nanocompositesmentioning

confidence: 99%

High-order optical nonlinearities in plasmonic nanocomposites—a review

2017

View full text Add to dashboard Cite

“…38 The improved technique of greater signal sensibility can be used to measure the nonlinear absorption and refraction at the same time. Another vital advantage of the technique is that it can extract information about both the magnitude and the sign of the nonlinear coefcients simultaneously with only one-laser-shot 39 without the necessarity of scanning of the sample as that of the Z-scan method. 40 Although the method was initially developed to measure the nonlinear refraction index of the materials, it can simultaneously measure the nonlinear refraction index and nonlinear absorption coefficient of materials conveniently from the analysis of three experiment images.…”

mentioning

confidence: 99%

Third- and high-order nonlinear optical properties of an intramolecular charge-transfer compound

et al. 2017

View full text Add to dashboard Cite

An oligo(phenylenevinylene) bridged intramolecular charge-transfer (ICT) compound, (TCNQ) 2 OPV 3 , has been synthesized and its third-and fifth-order nonlinear optical refraction indexes have been determined by measurement with the 4f system with a phase-object, under near-infrared excitation.Organic p-conjugated molecules have been extensively studied and applied in diverse elds ranging from eld-effect transistors (FETs), by taking advantage of the "click-type" near-quantitative [2 + 2] cycloadditions with appropriately activated alkynes, followed by retro-electrocyclizations. These naturally stable, nonplanar chromophores are ideal platforms for efficient intramolecular charge-transfer (ICT) processes and are regarded as promising nonlinear optical materials. [19][20][21][22][32][33][34][35][36] In this work, we have designed and synthesized an oligo-(phenylenevinylene) (OPV) bridged ICT compound, (TCNQ) 2 -OPV 3 , and studied its third-and h-order optical nonlinearities by a nonlinear optical imaging technique with the phase-object (NIT-PO) at the entry of a 4f coherent imaging system. 37 The method is based on a 4f system with top-hat beams and its theoretical model is simple Fourier optics, which leads to many advantages such as simple optical alignment, very high sensitivity and insensitivity to statistical uc-tuations of the laser beam.38 The improved technique of greater signal sensibility can be used to measure the nonlinear absorption and refraction at the same time. Another vital advantage of the technique is that it can extract information about both the magnitude and the sign of the nonlinear coefcients simultaneously with only one-laser-shot 39 without the necessarity of scanning of the sample as that of the Z-scan method.40 Although the method was initially developed to measure the nonlinear refraction index of the materials, it can simultaneously measure the nonlinear refraction index and nonlinear absorption coefficient of materials conveniently from the analysis of three experiment images.41 Moreover, the results of different sensitivity of nonlinear absorption and refraction are given by choosing different phase shi of the phase object. 42As an efficient method, the technique of measurement has successfully utilized to study the kinetics of photo-induced effects by shot-by-shot measurements. 43The ICT compound (TCNQ) 2 OPV 3 has been synthesized following the [2 + 2] cycloaddition and the subsequent retroelectrocyclization of TCNQ with the OPV bridged alkynes which have been activated by electronic donating groups (Fig. 1a and Scheme S1 in the ESI †). The compound displays two charge-transfer (CT) bands at 470 nm and 677 nm, respectively, in CH 2 Cl 2 in the UV-vis absorbance spectra, resulting from the two different D-A transitions of the compound (Fig. 1c and S1 in the ESI †). A distinct solvatochromic effect of (TCNQ) 2 OPV 3 has been observed in varied solvents, which was a characteristic behavior of the dipolar ICT molecules. [19][20][21][22]44 The major CT band at 677 nm (1.83 eV...

show abstract

“…But these organic crystals have large optical absorption, less thermal and mechanical stability which makes them unsuitable for non-linear optical applications [1][2][3][4][5][6]. Intramolecular charge transfer and strong π-electron delocalization determines the non-linear properties of organic molecules.…”

mentioning

confidence: 99%

Quantum Chemical Studies on 3-Nitroanilinium Trichloroacetate

Kavitha¹,

Pasupathi²,

Marchewka³

et al. 2017

Asian J. Chem.

View full text Add to dashboard Cite

INTRODUCTIONOrganic non-linear optical (NLO) materials have versatile applications in many fields which includes telecommunications, optical signal processing and optical switching because of its large non-linear susceptibilities when compared with inorganic crystals. But these organic crystals have large optical absorption, less thermal and mechanical stability which makes them unsuitable for non-linear optical applications [1][2][3][4][5][6]. Intramolecular charge transfer and strong π-electron delocalization determines the non-linear properties of organic molecules. Nitroaniline is one such push-pull molecule shows the intramolecular charge transfer from its NH 2 and NO 2 group [7].The o-, m-and p-disubstituted benzene derivative chromophores exhibit non-linear optical properties in both solid and solution state [8]. 3-Nitroaniline and its substituted benzene derivatives have been found to be an intensive area of research nowadays due to its low melting temperature and large microscopic second order non-linear susceptibilities. Similarly, trichloroacetic acid also exhibits the second harmonic generation and the literature survey revealed the versatility of this compound [9][10][11]. The experimental and theoretical research of nitroaniline and its derivatives were studied by many researchers [12][13][14][15][16] The organic single crystals of 3-nitroanilinium trichloroacetate have been grown from water solvent by using slow evaporation technique. Single crystal X-ray diffraction studies confirmed that the grown crystal is built up of 3-nitroanilinium cations and trichloroacetate anions. It is also found that the crystal crystallizes in monoclinic crystal system with space group P2(1) and the lattice parameters are obtained as a = 8.4618(5) Å, b = 6.4401(4) Å, c = 11.6623(8) Å and Z = 2. DFT-B3LYP/6-311++G(d,p) basis set is used to study the molecular structure of 3-nitroanilinium trichloroacetate. The existence of hydrogen bonding has been analyzed. The vibrational assignments and analysis of 3-nitroanilinium trichloroacetate have been performed and proved the existence of good correlation between the scaled theoretical and experimental wavenumbers. Natural bond orbital analysis have been carried out to study the stability of molecule. Frontier molecular orbital analysis has been done and discussed.Keywords: 3-Nitroanilinium trichloroacetate, Hydrogen bond, HOMO-LUMO, Natural bond orbital.slow evaporation technique. Selvakumar et al.[17] studied the structural, optical and thermal properties of 3-nitroanilinium trichloroacetate. The linear and non-linear optical properties of 3-nitroanilinium trichloroacetate has been studied theoretically by Dadsetani et al. [7]. As far as the authors knowledge concerned, this is for the first time we report the computational studies on 3-nitroanilinium trichloroacetate with 6-311++G(d,p) basis set. Also, the electronic parameters like chemical hardness, softness and electronegativity have been obtained by using molecular frontier orbital energies. Natural bonding orbital an...

show abstract

Techniques for nonlinear optical characterization of materials: a review

Cited by 138 publications

References 149 publications

High-order optical nonlinearities in plasmonic nanocomposites—a review

High-order optical nonlinearities in plasmonic nanocomposites—a review

Third- and high-order nonlinear optical properties of an intramolecular charge-transfer compound

Quantum Chemical Studies on 3-Nitroanilinium Trichloroacetate

Contact Info

Product

Resources

About