Second-order nonlinear-optical processes in orientationally ordered materials: relationship between molecular and macroscopic properties

Singer, Kenneth D.; Kuzyk, Mark G.; Sohn, John E.

doi:10.1364/josab.4.000968

Cited by 566 publications

(223 citation statements)

References 23 publications

Supporting

Mentioning

211

Contrasting

Unclassified

Order By: Relevance

“…Before further proceeding, it is emphasized that the theoretical framework presented in this work parallels the theory of dye-doped polymers, called Singer-Kuzyk-Sohn (SKS) model of electric poling, 56 which includes the effects of local potentials U n (Ω, F) due to applied poling field. Singer et al 56 showed that liquid crystals and polymer glasses can be formed into orientationally ordered materials by raising the temperature of the material at which molecular motion is greatly enhanced, applying an external aligning field and then cooling with the field applied. SKS model is a sort of nonlinear optical version of the Maier-Saupe model 57 of liquid crystal phase to describe the electric field poling of dye-doped polymers.…”

Section: Molecular Orientational Contributions To Nonlinear Macrmentioning

confidence: 99%

“…(A12) and Eq. (A17) we have (56) from which the nonvanishing components for αα(−ω; ω, 0, 0) class are αα iiii , αα iijj and αα ijji for i j ∈ {X, Y, Z }, where αα iijj = αα jjii and αα ijij = αα jiji = αα ijji = αα jiij with the isotropic condition αα iiii = αα iijj + 2 αα ijij . Similar relations for ᾱ µµ(−ω; ω, 0, 0) class may be expressed as in αα(−ω; ω, 0, 0) class, replacing α JK (0) and α KK (0) by µ J µ K and µ K µ K (= µ · µ), respectively.…”

Section: Quadratic Electro-optic (Or DC Kerr) Effectmentioning

confidence: 99%

See 1 more Smart Citation

Rigorous theory of molecular orientational nonlinear optics

Kwak

Kim

2015

AIP Advances

View full text Add to dashboard Cite

Classical statistical mechanics of the molecular optics theory proposed by Buckingham [A. D. Buckingham and J. A. Pople, Proc. Phys. Soc. A 68, 905 (1955)] has been extended to describe the field induced molecular orientational polarization effects on nonlinear optics. In this paper, we present the generalized molecular orientational nonlinear optical processes (MONLO) through the calculation of the classical orientational averaging using the Boltzmann type time-averaged orientational interaction energy in the randomly oriented molecular system under the influence of applied electric fields. The focal points of the calculation are (1) the derivation of rigorous tensorial components of the effective molecular hyperpolarizabilities, (2) the molecular orientational polarizations and the electronic polarizations including the well-known third-order dc polarization, dc electric field induced Kerr effect (dc Kerr effect), optical Kerr effect (OKE), dc electric field induced second harmonic generation (EFISH), degenerate four wave mixing (DFWM) and third harmonic generation (THG). We also present some of the new predictive MONLO processes. For second-order MONLO, second-order optical rectification (SOR), Pockels effect and difference frequency generation (DFG) are described in terms of the anisotropic coefficients of first hyperpolarizability. And, for third-order MONLO, third-order optical rectification (TOR), dc electric field induced difference frequency generation (EFIDFG) and pump-probe transmission are presented. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License. [http://dx

show abstract

Section: Molecular Orientational Contributions To Nonlinear Macrmentioning

confidence: 99%

Section: Quadratic Electro-optic (Or DC Kerr) Effectmentioning

confidence: 99%

Rigorous theory of molecular orientational nonlinear optics

Kwak

Kim

2015

AIP Advances

View full text Add to dashboard Cite

show abstract

“…( ) where ε r0 is the static relative dielectric constant and ε r∞ is the relative dielectric constant in the range of optical frequencies [12,23]. The main characteristics are reported in Table 1 [12,[24][25][26][27][28][29].…”

Section: Electro-optic Properties Of a Single Moleculementioning

confidence: 99%

“…In such a technique [23] it is not necessary to apply electrodes on the polymeric material, as a consequence, it is possible for example to deposit, by spin coating, a polymeric film directly on a bare substrate. In the corona poling procedure the sample is put on a metal plate that plays simultaneously the role of heater and bottom electrode.…”

Section: Inducing Of the Macroscopic Electro-optic Propertiesmentioning

confidence: 99%

Fluorinated and Non-Fluorinated Electro-Optic Copolymers: Determination of the Time and Temperature Stability of the Induced Electro-Optic Coefficient

Belardini

2012

Applied Sciences

View full text Add to dashboard Cite

Abstract:Organic fluorinated materials demonstrate their excellent electro-optic properties and versatility for technological applications. The partial substitution of hydrogen with fluorine in carbon-halides bounds allows the reduction of absorption losses at the telecommunication wavelengths. In these interesting compounds, the electro-optic coefficient was typically induced by a poling procedure. The magnitude and the time stability of the coefficient is an important issue to be investigated in order to compare copolymer species. Here, a review of different measurement techniques (such as nonlinear ellipsometry, second harmonic generation, temperature scanning and isothermal relaxation) was shown and applied to a variety of fluorinated and non-fluorinated electro-optic compounds.

show abstract

“…Under the condition of pp-polarization in addition to the assumptions that the Kleinman symmetry 63 is satisfied and that the axis of anisotropy is perpendicular to the sample surface with C v symmetry, 64 the effective SHG coefficient is written as follows:…”

mentioning

confidence: 99%

不規則系酸化物における光学的２次非線形性と磁気秩序

Tanaka

2005

J. Ceram. Soc. Japan

View full text Add to dashboard Cite

Recent research activities of the author's group concerning second-order optical nonlinearity induced in amorphous oxides and magnetic order in a disordered crystalline lattice are described. For the second-order optical nonlinearity, an attention is paid to second-harmonic generation SHG in thermally or optically poled tellurite glasses. Some tellurite glasses which exhibit interesting properties such as very stable second-order nonlinearity and large second-order nonlinear susceptibility are presented. The former is realized in ZnO-TeO 2 glass, and the latter is attained for Na -doped WO 3 -TeO 2 glass. Also, the mechanism for SHG in optically poled Nb 2 O 5 -TeO 2 glasses doped with vanadium ions is argued. A model including two-step absorption at a wavelength of 532 nm and the presence of photo-induced electrons and positive holes trapped at localized states is proposed. On the other hand, magnetic and magnetooptical properties of disordered ZnFe 2 O 4 thin film prepared by a sputtering method are reported as an interesting example of magnetic order in a disordered lattice. The resultant disordered thin film shows high magnetization even at room temperature and a spin-freezing temperature higher than room temperature. The temperature dependence of magnetization under the conditions of field cooling and zero-field cooling, the dependence of spin-freezing temperature on frequency of ac magnetic field, and temperature variation of ac nonlinear susceptibility suggest that the spin-freezing or magnetic transition of the disordered ZnFe 2 O 4 thin film is explainable in terms of the superparamagnetism with strong intercluster interactions. It is also demonstrated that large Faraday effect is observed in a short wavelength range for the disordered ZnFe 2 O 4 thin film.

show abstract

Second-order nonlinear-optical processes in orientationally ordered materials: relationship between molecular and macroscopic properties

Cited by 566 publications

References 23 publications

Rigorous theory of molecular orientational nonlinear optics

Rigorous theory of molecular orientational nonlinear optics

Fluorinated and Non-Fluorinated Electro-Optic Copolymers: Determination of the Time and Temperature Stability of the Induced Electro-Optic Coefficient

不規則系酸化物における光学的２次非線形性と磁気秩序

Contact Info

Product

Resources

About