Picosecond z-scan measurements of nonlinear optical susceptibility of films and solutions of novel organometallic polymers

Афанасьев, А. В.; Zinoviev, A.P.; Антипов, О.Л.; Bushuk, B. A.; Бушук, С. Б.; Рубинов, А. Н.; Fominih, J.Yu.; Klapshina, Larisa G.; Домрачев, Г. А.; Douglas, William E.

doi:10.1016/s0030-4018(01)01656-x

Cited by 17 publications

(11 citation statements)

References 8 publications

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“…[23][24][25] In particular, the large increase in the value of the electronic χ (3) (ca. two orders of magnitude) for a similar PEAES derivative observed on going from solution to the solid-state film 26 should be noted. The same mechanisms responsible for IR-tailing obviously may provide the traps in the composite necessary for PR.…”

Section: Methodsmentioning

confidence: 73%

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<title>New photorefractive polymer composities highly sensitive at 1500 nm</title>

et al. 2002

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Polymeric photorefractive materials have attracted much attention over the past decade due to their potential applications, especially for optical information processing. However, their practical use has until now been limited, the available photosensitizers being efficient only in the visible range. Here, the chemical development and optical investigations of a photorefractive polymeric material active at 1500 nm are described. To our knowledge, this is the first such material to be reported. A conjugated poly[(ethynediyl)(arylene)(ethynediyl)silylene] acts as an optical chromophore, as well as charge generator and conductor. Its absorption band tails into the near-IR hence providing charge generation at the 1500 nm excitation. The photoconductivity of the composite samples was measured by use of a dc-method with a 1500 nm diode laser source. The electro-optical coefficient was measured by use of a simple reflection technique. The photorefractive response was investigated by using a two-beam coupling technique. The gain of the probe beam intensity, delivered from the pumping beam, reached 40 cm -1 with an electric field strength of 650 kVcm -1 thus confirming the photorefractive nature of the grating. The gain exceeded the absorption (30 cm -1 ) hence showing the high potential of this material for applications.

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Section: Methodsmentioning

confidence: 73%

“…In addition, the long conjugated length of the polymer backbone giving rise to a high hyperpolarizability makes PEAES useful as an optical chromophore. 26,27 Indeed, the PEAES molecule being centrosymmetric, the microscopic secondorder susceptibility β ijk must be zero. At first sight this might appear to preclude PR effects.…”

Section: Methodsmentioning

confidence: 99%

<title>New photorefractive polymer composities highly sensitive at 1500 nm</title>

et al. 2002

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“…[1][2][3][4][5] Conjugated polymers are usually chemically synthesized and dissolved in organic solvents or fabricated into films on various substrates via spin-coating to study their NLO properties. 6,7) However, such chemical polymerizations involve many processes and the films obtained are inhomogeneous. In contrast, the films integrated by electrochemical polymerization are more compact and possesses higher conductivity.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Optical Properties of Poly(3,4-ethylenedioxythiophene) Synthesized by Electropolymerization

Mao¹,

Xu²,

Niu³

et al. 2009

jjap

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Poly(3,4-ethylenedioxythiophene) (PEDOT) films were synthesized on indium-doped tin oxide (ITO) electrodes by electropolymerization in propylene carbonate (PC) electrolyte. The morphology of the PEDOT films was characterized by field emission scanning electron microscopy and atomic force microscope. The third-order nonlinear optical properties of PEDOT films were investigated by Z -scan technique at 532 nm with 7 ns pulses from a Nd:YAG laser. The result shows that the third-order nonlinear refractive index of the PEDOT film is as high as 10 À13 m 2 W À1 . At the same time, the properties of PEDOT oligomer dissolved in PC solution were investigated. The corresponding nonlinear refractive index in PC electrolyte exhibited up to 10 À17 m 2 W À1 . The perfect stability and ultra-high third order nonlinear refractive indexes of PEDOT films on ITO and PEDOT in PC solution indicate that PEDOT synthesized by electropolymerized have great potential application for nonlinear optical devices. #

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“…Previously, we have reported the synthesis of (arene) 2 Mcontaining polyacrylonitrile (M = Cr,V) prepared by the polycyanoethylation reaction between bis-arene complexes and acrylonitrile. [1][2][3][4][5] The resulting star-shaped molecules consist of a central (arene) 2 M species with polyacrylonitrile (PAN) arms covalently bonded to the arene ligands. The properties of thermolysed bis(arene)metal-containing polyacrylonitrile (MPAN) are consistent with the formation of conjugated ladder-type polynaphthyridine structures.…”

Section: Introductionmentioning

confidence: 99%

Chromium-containing organometallic nanomaterials for non-linear optics

Klapshina¹,

Grigoryev²,

Lopatina³

et al. 2006

New J. Chem.

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International audienceNovel nonlinear optical polymeric film-producing nanocomposites based on bis(arene)chromium complexes incorporated into a CN-containing matrix have been developed. Polymer-precursors were prepared by the reaction of Cr(EtnC6H6 n)2 (n = 1,2,3) with CN-containing vinyl monomers (acrylonitrile, crotononitrile or ethyl 2-cyanopropenoate). Extraordinarily high third-order nonlinear optical susceptibilities of the ultra-fast electronic type have been demonstrated at various wavelengths for polymer films prepared from these composites by using the Z-scan technique and the spectrally-resolved two-beam coupling method. A notable electro-optical response of the composite with an essential contribution of orientational effects was established. The electron-diffraction pattern in films and the presence of a non-zero electro-optical coefficient in the absence of an external poling field indicates the formation of self-organized structures. In CrPAN and [CrPAN]+TCNE–, a single Cr-C distance was found in the EXAFS data refinement, showing that the arene rings are parallel and symmetric as in bis(benzene)chromium. The Cr-C distances in these two materials are very similar to the 2.13 Angstroms in bis(benzene)chromium. In [CrPAN]+OH–, more than one metal-carbon distance was resolved, showing either that the two arene rings are at different distances from the metal, or that they are tilted rather than parallel

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Picosecond z-scan measurements of nonlinear optical susceptibility of films and solutions of novel organometallic polymers

Cited by 17 publications

References 8 publications

<title>New photorefractive polymer composities highly sensitive at 1500 nm</title>

<title>New photorefractive polymer composities highly sensitive at 1500 nm</title>

Nonlinear Optical Properties of Poly(3,4-ethylenedioxythiophene) Synthesized by Electropolymerization

Chromium-containing organometallic nanomaterials for non-linear optics

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