Bibliografie tematiche / Quadratic nonlinearity

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Letteratura scientifica selezionata sul tema "Quadratic nonlinearity"

Autore: Grafiati
Pubblicato: 4 giugno 2021
Ultima modifica: 6 settembre 2023

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Articoli di riviste sul tema "Quadratic nonlinearity"

1

Mosolov, A. B., and O. Yu Dinartsev. "Filtration law with quadratic nonlinearity." Journal of Engineering Physics 51, no. 5 (November 1986): 1292–95. http://dx.doi.org/10.1007/bf00870683.

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Defever, F., W. Troost, and Z. Hasiewicz. "Superconformal algebras with quadratic nonlinearity." Physics Letters B 273, no. 1-2 (December 1991): 51–55. http://dx.doi.org/10.1016/0370-2693(91)90552-2.

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TRAN, H. T. "QUADRATIC NONLINEAR SURFACE WAVES." Journal of Nonlinear Optical Physics & Materials 05, no. 01 (January 1996): 133–38. http://dx.doi.org/10.1142/s021886359600012x.

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Nonlinear surface waves at an interface between a linear medium and another medium with quadratic nonlinearity are possible due to the phenomenon of nonlinearity-induced phase matching. The waves are numerically calculated, along with their dispersion, stability, and comparison with their cubic counterparts. An extension to guided waves is also discussed.
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CHANDRAN, VINOD, STEVE ELGAR, and CHARLES PEZESHKI. "BISPECTRAL AND TRISPECTRAL CHARACTERIZATION OF TRANSITION TO CHAOS IN THE DUFFING OSCILLATOR." International Journal of Bifurcation and Chaos 03, no. 03 (June 1993): 551–57. http://dx.doi.org/10.1142/s021812749300043x.

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Higher-order spectral (bispectral and trispectral) analyses of numerical solutions of the Duffing equation with a cubic stiffness are used to isolate the coupling between the triads and quartets, respectively, of nonlinearly interacting Fourier components of the system. The Duffing oscillator follows a period-doubling intermittency catastrophic route to chaos. For period-doubled limit cycles, higher-order spectra indicate that both quadratic and cubic nonlinear interactions are important to the dynamics. However, when the Duffing oscillator becomes chaotic, global behavior of the cubic nonline
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Darmanyan, S. A., and M. Nevière. "Eigenmodes of waveguides with quadratic nonlinearity." Optics Communications 176, no. 1-3 (March 2000): 231–37. http://dx.doi.org/10.1016/s0030-4018(00)00479-x.

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Babin, A., and A. Figotin. "Nonlinear photonic crystals: I. Quadratic nonlinearity." Waves in Random Media 11, no. 2 (April 2001): R31—R102. http://dx.doi.org/10.1088/0959-7174/11/2/201.

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Gu, Wen-ju, Zhen Yi, Li-hui Sun, and Yan Yan. "Enhanced quadratic nonlinearity with parametric amplifications." Journal of the Optical Society of America B 35, no. 4 (March 2, 2018): 652. http://dx.doi.org/10.1364/josab.35.000652.

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Wang, Ke, Jing Li, Fan Dai, Mengshuai Wang, Chuanhang Wang, Qiang Wang, Chenghou Tu, Yongnan Li, and Huitian Wang. "Robust Pulse-Pumped Quadratic Soliton Assisted by Third-Order Nonlinearity." Photonics 10, no. 2 (February 2, 2023): 155. http://dx.doi.org/10.3390/photonics10020155.

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The generation of a quadratic soliton in a pulse-pumped microresonator has attracted significant interest in recent years. The strong second-order nonlinearity and high peak power of pumps offer a straightforward way to increase efficiency. In this case, the influence of the third-order nonlinearity effect becomes significant and cannot be ignored. In this paper, we study the quadratic soliton in a degenerate optical parametric oscillator driven synchronously by the pulse pump with third-order nonlinearity. Our simulations verify that the robustness of quadratic soliton generation is enhanced
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Zhang, Wen, Jian Zhang, and Heilong Mi. "Ground states and multiple solutions for Hamiltonian elliptic system with gradient term." Advances in Nonlinear Analysis 10, no. 1 (July 30, 2020): 331–52. http://dx.doi.org/10.1515/anona-2020-0113.

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Abstract This paper is concerned with the following nonlinear Hamiltonian elliptic system with gradient term $$\begin{array}{} \displaystyle \left\{\,\, \begin{array}{ll} -{\it\Delta} u +\vec{b}(x)\cdot \nabla u+V(x)u = H_{v}(x,u,v)\,\,\hbox{in}\,\mathbb{R}^{N},\\[-0.3em] -{\it\Delta} v -\vec{b}(x)\cdot \nabla v +V(x)v = H_{u}(x,u,v)\,\,\hbox{in}\,\mathbb{R}^{N}.\\ \end{array} \right. \end{array}$$ Compared with some existing issues, the most interesting feature of this paper is that we assume that the nonlinearity satisfies a local super-quadratic condition, which is weaker than the usual glo
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Wu, Junyao, Chunbiao Li, Xu Ma, Tengfei Lei, and Guanrong Chen. "Simplification of Chaotic Circuits With Quadratic Nonlinearity." IEEE Transactions on Circuits and Systems II: Express Briefs 69, no. 3 (March 2022): 1837–41. http://dx.doi.org/10.1109/tcsii.2021.3125680.

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Tesi sul tema "Quadratic nonlinearity"

1

Braun, Michael Rainer. "Characterization of nonlinearity parameters in an elastic material with quadratic nonlinearity with a complex wave field." Thesis, Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/26566.

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Thesis (M. S.)--Civil and Environmental Engineering, Georgia Institute of Technology, 2009.<br>Committee Chair: Jacobs, Laurence; Committee Co-Chair: Qu, Jianmin; Committee Member: DesRoches, Reginald. Part of the SMARTech Electronic Thesis and Dissertation Collection.
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Kuechler, Sebastian. "Wave Propagation in an Elastic Half-Space with Quadratic Nonlinearity." Thesis, Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/19823.

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This study investigates wave propagation in an elastic half-space with quadratic nonlinearity due to a line load on the surface. The consideration of this problem is one of the well known Lamb problems. Even since Lamb's original solution, numerous investigators have obtained solutions to many different variants of the Lamb problem. However, most of the solutions existing in the current literature are limited to wave propagation in a linear elastic half-space. In this work, the Lamb problem in an elastic half-space with quadratic nonlinearity is considered. For this, the problem is first formu
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Howard, Timothy G. "Predicting the asymptotic behavior for differential equations with a quadratic nonlinearity." Diss., Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/28823.

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Xue, Linfeng. "Theoretical Characterization of Internal Resonance in Micro-Electro-Mechanical Systems (MEMS)." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1593296130150349.

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Patra, Harisadhan. "Mechanisms of remote masking." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1199309775.

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Mak, William Chi Keung Electrical Engineering &amp Telecommunications Faculty of Engineering UNSW. "Coupled Solitary Waves in Optical Waveguides." Awarded by:University of New South Wales. Electrical Engineering and Telecommunications, 1998. http://handle.unsw.edu.au/1959.4/17494.

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Soliton states in three coupled optical waveguide systems were studied: two linearly coupled waveguides with quadratic nonlinearity, two linearly coupled waveguides with cubic nonlinearity and Bragg gratings, and a quadratic nonlinear waveguide with resonant gratings, which enable three-wave interaction. The methods adopted to tackle the problems were both analytical and numerical. The analytical method mainly made use of the variational approximation. Since no exact analytical method is available to find solutions for the waveguide systems under study, the variational approach was proved t
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Bhattacharya, Mily. "Quadratic Nonlinearity In Covalently And Non-Covalently Linked Molecules In Solution." Thesis, 2006. https://etd.iisc.ac.in/handle/2005/366.

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Abstract (sommario):
This thesis deals with the investigation of the first hyperpolarizabilities (β) of a large number of molecules linked to other molecules either covalently or noncovalently. Chapter 1 gives a brief introduction to supramolecular chemistry and Nonlinear Optics (NLO). A survey of literature pertinent to noncovalently interacting supramolecular assembly and their NLO properties as well as NLO properties of oligomeric systems has been presented. The scope of the present investigation has been described at the end of the chapter. Chapter 2 discusses all the methods used in carrying out thi
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Bhattacharya, Mily. "Quadratic Nonlinearity In Covalently And Non-Covalently Linked Molecules In Solution." Thesis, 2006. http://hdl.handle.net/2005/366.

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Abstract (sommario):
This thesis deals with the investigation of the first hyperpolarizabilities (β) of a large number of molecules linked to other molecules either covalently or noncovalently. Chapter 1 gives a brief introduction to supramolecular chemistry and Nonlinear Optics (NLO). A survey of literature pertinent to noncovalently interacting supramolecular assembly and their NLO properties as well as NLO properties of oligomeric systems has been presented. The scope of the present investigation has been described at the end of the chapter. Chapter 2 discusses all the methods used in carrying out this th
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Ghosh, Sampa. "Quadratic Optical Nonlinearity And Geometry Of 1:1 Electron Donor Acceptor Complexes In Solution." Thesis, 2008. https://etd.iisc.ac.in/handle/2005/711.

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Abstract (sommario):
The knowledge of geometry of molecular complexes formed via molecular association in solution through weak interactions is always important to understand the origin of stability and function of an array of molecules, supramolecular assemblies, and macromolecular networks. Simple 1:1 molecular complexes are very useful in this regard as they provide a model to understand both the nature of these interactions and their structural implications. Several weak noncovalent forces from long range (van der Waal’s, electrostatic, induction, dispersion) to short range (charge transfer) govern the geometr
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Ghosh, Sampa. "Quadratic Optical Nonlinearity And Geometry Of 1:1 Electron Donor Acceptor Complexes In Solution." Thesis, 2008. http://hdl.handle.net/2005/711.

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Abstract (sommario):
The knowledge of geometry of molecular complexes formed via molecular association in solution through weak interactions is always important to understand the origin of stability and function of an array of molecules, supramolecular assemblies, and macromolecular networks. Simple 1:1 molecular complexes are very useful in this regard as they provide a model to understand both the nature of these interactions and their structural implications. Several weak noncovalent forces from long range (van der Waal’s, electrostatic, induction, dispersion) to short range (charge transfer) govern the geometr
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Libri sul tema "Quadratic nonlinearity"

1

America, Optical Society of, Institution of Electrical Engineers, and Institute of Physics, eds. Photosensitivity and quadratic nonlinearity in glass wave guides: Fundamentals and applications, September 9-11, 1995, Portland, Oregon : summaries of the papers presented at the topical meeting. Washington, DC: Optical Society of America, 1995.

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2

Isett, Philip. The Coarse Scale Flow and Commutator Estimates. Princeton University Press, 2017. http://dx.doi.org/10.23943/princeton/9780691174822.003.0016.

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This chapter derives estimates for the coarse scale flow and commutator. Instead of mollifying the velocity field in the time variable, it derives a Transport equation for vsubscript Element and some estimates that will be necessary for the proof. Here the quadratic term arises from the failure of the nonlinearity to commute with the averaging. Commutator estimates are then derived. To observe cancellation in the quadratic term, the control over the higher-frequency part of v is used, and cancellation is obtained from the lower-frequency parts. It becomes clear that the commutator terms can be
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3

Physics, Institute Of. Photosensitivity and Quadratic Nonlinearity in Glass Waveguides: Fundamentals and Applications : Postconference Edition 1995 (Technical Digest Series (Optical Society of America), 1995, V. 22.). Optical Society of America, 1995.

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Capitoli di libri sul tema "Quadratic nonlinearity"

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Nevière, M., and S. A. Darmanyan. "Nonlinear Eigenmodes in Quadratic Film Waveguides." In Nonlinearity and Disorder: Theory and Applications, 423–33. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0542-5_36.

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Kobyakov, A., F. Kh Abdullaev, S. A. Darmanyan, E. Schmidt, and F. Lederer. "Spatial Solitons in Random Quadratic Media." In Nonlinearity and Disorder: Theory and Applications, 37–53. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0542-5_4.

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Conti, C., and S. Trillo. "Self-transparency and Localization in Gratings with Quadratic Nonlinearity." In Springer Series in Photonics, 73–105. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/978-3-662-05144-3_5.

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Filippova, Tatiana F., and Elena V. Berezina. "On State Estimation Approaches for Uncertain Dynamical Systems with Quadratic Nonlinearity: Theory and Computer Simulations." In Large-Scale Scientific Computing, 326–33. Berlin, Heidelberg: Springer Berlin Heidelberg, 2008. http://dx.doi.org/10.1007/978-3-540-78827-0_36.

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Vaidyanathan, Sundarapandian. "Analysis, Adaptive Control and Synchronization of a Novel 3-D Chaotic System with a Quartic Nonlinearity and Two Quadratic Nonlinearities." In Advances in Chaos Theory and Intelligent Control, 429–53. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-30340-6_18.

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"Free oscillation systems with quadratic nonlinearity." In Modern Mechanics and Mathematics. Chapman and Hall/CRC, 2003. http://dx.doi.org/10.1201/9780203491164.ch12.

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Etrich, Christoph, Falk Lederer, Boris A. Malomed, Thomas Peschel, and Ulf Peschel. "Optical Solitons in Media with a Quadratic Nonlinearity." In Progress in Optics, 483–568. Elsevier, 2000. http://dx.doi.org/10.1016/s0079-6638(00)80022-0.

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Zaccarian, Luca, and Andrew R. Teel. "Analysis and Synthesis of Feedback Systems: Quadratic Functions and LMIs." In Modern Anti-windup Synthesis. Princeton University Press, 2011. http://dx.doi.org/10.23943/princeton/9780691147321.003.0003.

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Abstract (sommario):
This chapter describes the analysis and synthesis of feedback systems, with particular emphasis on quadratic functions and linear matrix inequalities (LMIs). It first considers the analysis of feedback loops with saturation, with the goal of developing tools for verifying internal stability and quantifying L₂ external stability for the feedback interconnection of a linear system with a saturation nonlinearity. It then discusses quadratic functions and semidefinite matrices, along with the use of quadratic functions to analyze unconstrained feedback systems. It also demonstrates how the LMI feasibility and eigenvalue problems can be solved efficiently using modern numerical software packages. Furthermore, it looks at the global vs. regional analysis of unconstrained feedback systems. A few examples of nonlinear gain computation are provided to illustrate the use of the LMIs. The chapter concludes by explaining regional synthesis in feedback loops with saturation based on the LMIs.
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Atti di convegni sul tema "Quadratic nonlinearity"

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Sugden, Kate, Lin Zhang, John Williams, and Ian Bennion. "Dissimilar wavefront technique for linear and quadratic chirps." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.12.

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In this paper, we discuss and characterise two variations on the dissimilar wavefront technique1 that give near-linearly and quadratically chirped gratings. This technique is advantageous over others that have been proposed for the fabrication of chirped gratings because of its simplicity and flexibility. A high level of bandwidth control is demonstrated for gratings of bandwidths in the range of 0.5-23nm.
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Booth, I. J., J. L. Archambault, and B. F. Ventrudo. "Photodarkening in Upconversion Pumped Thulium Doped Fluorozirconate Fibre Lasers." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.pmd.6.

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Upconversion pumped lasing in rare earth doped fluorozirconate optical fibre offers the potential for compact blue green laser sources pumped by commercially available infrared laser diodes. A promising candidate for such a source is the thulium system first demonstrated by Steve Grubb and co-workers [1], which lases in the blue at 482 nm with a single pump source at about 1130 nm. Figure 1 illustrates the relevant energy levels of the trivalent thulium ion, and the upconversion mechanism. Ions excited to the short lived H5 and F23 levels decay rapidly by phonon emission to the metastable H4 a
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Watanabe, Yuichi, Naoyuki Takeshita, Toshio Tsuchiya, Hideo Hosono, and Hiroshi Kawazoe. "A large second-order nonlinearity in poled phosphate glass containing mobile protons." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.1.

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Recently, Myers et al. reported that a large second-order nonlinearity [χ(2)~1pm/V] was induced in the near surface region (~4μm) of commercial fused silica by electric-field (5× 104V/cm) poling process at 300°C1. Since the large nonlinearity that they observed were remarkable in the glass containing a small amount of alkali (Na+) impurity, they proposed a model, based on the formation of space-charge layer due to drift of Na+ during poling process, that could explain the nonlinearity. Here we report second-order nonlinearity in poled phosphate glass. The observed nonlinearity is explained ten
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4

Poumellec, B., P. Niay, M. Douay, and J. F. Bayon. "U. V. induced densification during Bragg grating writing." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.6.

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It was expected that the bleaching of the 240-260 nm absorption band and creation of others were sufficient to explain all part of the index change through Kramers-Kronig conjugation. However, Williams et al. [1] taking into account the UV absorption change showed that at most 20% of the index change can be accounted for by this effect. This statement was confirmed also by Eric Fertein [2] in various type of fibers and in taking into account the VUV absorption change. In addition, some recent experiments by Albert et al. [3] using 193 nm light indicates that the bleaching of absorption bands n
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Magruder, Robert H. "The Formation of Nonlinear Optical Materials by Ion Implantation." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.pma.1.

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There are several potential candidate systems for nonlinear optical materials including resonant and non-resonant semiconductor quantum dots, organic materials and glass systems. Two of the glass systems are based on glasses containing transition metal ions. The first system exploits the polarization of the transition metal ions (Ti, V, Nb) incorporated in the glass matrix, while the second is based on glasses with metallic nanoclusters of the transition ions (Cu, Ag, Au). While both systems have been shown to have desirable properties for nonlinear media each systems has different nonlinear p
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Dianov, E. M., V. I. Karpov, A. S. Kurkov, O. I. Medvedkov, A. M. Prokhorov, V. N. Protopopov, and S. A. Vasil'ev. "Gain Spectrum Flattening of Erbium-Doped Fiber Amplifier Using Long-Period Fiber Grating." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sab.3.

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The gain spectrum nonuniformity is one of the most important problems in using erbium-doped fiber amplifiers (EDFA) in wavelength-division-multiplexing transmission systems. Several techniques for the gain spectrum flattening with the use of passive filters have been proposed: mechanical deformation of the fiber to couple fundamental and leaky modes [1], etching of the grating at the surface of a D-fiber [2], utilization of a twin-core fiber filter [3], application of photoinduced fiber Bragg grating [4], application of a Fourier filter based on the incorporation of the glass plate [5] or a ta
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Martin, Jean, Graham Atkins, François Ouellette, Michel Têtu, Jean Deslauriers, and Michel A. Duguay. "Direct Correlation Between UV-Excited Photo-Luminescence and Refrative Index Change in Photosensitive Ge-Doped and Hydrogenated Optical Fibre." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.pma.2.

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Many studies have been devoted to the origin of photosensitivity since its discovery in the 70's [1]. The time dependence of the UV-excited blue photoluminescence (PL) has been related to photosensitivity, but up to now the only correlation reported [2] is the relation between the decrease of the blue PL and the refractive index change. In this paper we intend to show a direct correlation between the increase of the blue PL and the refractive index change.
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Zhang, L., K. Sugden, J. A. R. Williams, I. Bennion, D. C. J. Reid, and C. M. Ragdale. "In-Fiber Transmission Filters with Broad Stopbands using Chirped Bragg Gratings." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.11.

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Many optical fiber applications, such as wavelength division multiplexing/demultiplexing, frequency-guiding in soliton systems, and the filtering out of spontaneous emission noise from fiber amplifiers require transmission band-pass filters with a wide range of finesses and free spectral ranges. Bragg gratings written directly into the optical fiber by direct UV exposure [1] show particular promise in this area and there have been many reported techniques to date proposed for fabricating fiber grating transmission filters (e.g. [2–7]) Most of these techniques however do not allow independent a
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Kester, John J., Iyad Dajani, Peter Ranon, and Thomas Alley. "Modal and Polarization Properties of SHG in Doped-Silica Waveguides: Transverse Modulation Effects." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sac.5.

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The generation of second harmonic light in optically modified fibers1 and thin films2 has been shown to arise from a periodic modulation of the second-order susceptibility, χ(2), along the direction of propagation.3 This longitudinal modulation allows the phase matching of the generated second harmonic light with the fundamental wave. The efficiency of the second harmonic for different waveguiding modes and different polarizations is governed by an additional modulation in the transverse direction. The overlap of χ(2) with the transverse profiles of the optical electric fields across the waveg
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Moss, D., F. Ouellette, M. Faith, P. Leech, P. Kemeny, M. Ibsen, O. Leistiko, C. V. Poulsen, J. D. Love, and F. J. Ladouceur. "All Optically Written Planar Germanosilicate Waveguide Gratings." In Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Washington, D.C.: Optica Publishing Group, 1995. http://dx.doi.org/10.1364/pqn.1995.sub.8.

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Photo-induced index changes in germanosilicate glass is a well known effect and has provided the basis for much recent activity on photoinduced refractive index gratings in fibres1. Since then, very large (&gt;10-3) index changes in hydrogen loaded waveguide structures have been observed and used as the basis for patterning channel waveguides2 and directional couplers3. Recently, we have demonstrated waveguide structures patterned in PECVD grown material without the aid of hydrogen loading4,5, and in this paper we report the fabrication of all optically patterned buried waveguide grating struc
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Rapporti di organizzazioni sul tema "Quadratic nonlinearity"

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Dimova, Milena, Natalia Kolkovska, and Nikolay Kutev. Orbital Stability or Instability of Solitary Waves to Generalized Boussinesq Equation with Quadratic-cubic Nonlinearity. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, August 2018. http://dx.doi.org/10.7546/crabs.2018.08.01.

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OPTICAL SOCIETY OF AMERICA WASHINGTON DC. Postdeadline Papers on Photosensitivity and Quadratic Nonlinearity in Glass Waveguides. Fundamentals and Applications Held in Portland, Oregon on 9-11 September 1995. Technical Digest Series. Volume 22. Fort Belvoir, VA: Defense Technical Information Center, September 1995. http://dx.doi.org/10.21236/ada306074.

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