中文
相关论文

相关论文: Bouncing localized structures in a liquid-crystal …

200 篇论文

Waves propagating in certain one-dimensional quasiperiodic lattices are known to exhibit a sharp localization transition. We theoretically predict and experimentally observe that the localization of light in one-dimensional photonic…

光学 · 物理学 2022-11-14 Sachin Vaidya , Christina Jörg , Kyle Linn , Megan Goh , Mikael C. Rechtsman

The properties of the localized states of a two component Bose-Einstein condensate confined in a nonlinear periodic potential [nonlinear optical lattice] are investigated. We reveal the existence of new types of solitons and study their…

其他凝聚态物理 · 物理学 2009-11-13 F. Kh. Abdullaev , A. Gammal , M. Salerno , Lauro Tomio

A simulation study demonstrates that localization can arise as the result of the breakdown of stable quasi-crystal-like atomic configurations. Samples produced at elevated quench rates and via more energetic processes contain a lower…

材料科学 · 物理学 2007-05-23 Yunfeng Shi , Michael L. Falk

A mathematical analogy between paraxial optics with two circular polarizations of light in a defocusing Kerr medium with positive dispersion, binary Bose-Einstein condensates of cold atoms in the phase separation regime, and hydrodynamics…

光学 · 物理学 2023-04-26 Victor P. Ruban

We show that non-linear optical structures involving a balanced gain-loss profile, can act as unidirectional optical valves. This is made possible by exploiting the interplay between the fundamental symmetries of parity (P) and time (T),…

We review the recent developments in the field of photonic lattices emphasizing their unique properties for controlling linear and nonlinear propagation of light. We draw some important links between optical lattices and photonic crystals…

We study the stabilization of localized structures by discreteness in one-dimensional lattices of diffusively coupled nonlinear sites. We find that in an external driving field these structures may lose their stability by either relaxing to…

patt-sol · 物理学 2007-05-23 Igor Mitkov , Konstantin Kladko , A. R. Bishop

We observe linear and nonlinear light localization at the edges and in the corners of truncated moir\'e lattices created by the superposition of periodic mutually-twisted at Pythagorean angles square sublattices. Experimentally exciting…

We address the interactions between optical solitons in the system with longitudinally varying nonlocality degree and nonlinearity strength. We consider a physical model describing light propagation in nematic liquid crystals featuring a…

斑图形成与孤子 · 物理学 2009-11-13 Fangwei Ye , Yaroslav V. Kartashov , Lluis Torner

We consider non-stationary localized oscillations of an infinite Bernoulli-Euler beam. The beam lies on the Winkler foundation with a point inhomogeneity (a concentrated spring with negative time-varying stiffness). In such a system with…

经典物理 · 物理学 2018-10-26 E. V. Shishkina , S. N. Gavrilov , Yu. A. Mochalova

Intense light propagating in a nonlinear medium can generate an ensemble of interacting filaments of light, or spatial solitons. Using nematic liquid crystals, we demonstrate that they undergo a collective behavior typical of complex…

光学 · 物理学 2009-11-11 Claudio Conti , Marco Peccianti , Gaetano Assanto

In the present work, we attempt a brief summary of various areas where nonlinear waves have been emerging in the phenomenology of lattice dynamical systems. These areas include nonlinear optics, atomic physics, mechanical systems,…

斑图形成与孤子 · 物理学 2010-09-17 P. G. Kevrekidis

We show, through analytical theory and rigorous numerical calculations, that optical binding can organize a collection of particles into stable one-dimensional lattice. This lattice, as well as other optically-bound structures, are shown to…

其他凝聚态物理 · 物理学 2009-11-11 Jack Ng , C. T. Chan

Localised structures in dissipative appears in various fields of natural science such as biology, chemistry, plant ecology, optics and laser physics. The proposed theme issue is to gather specialists from various fields of non-linear…

斑图形成与孤子 · 物理学 2015-06-22 M. Tlidi , K. Staliunas , K. Panajotov , A. G. Vladimirov , M. G. Clerc

We consider dispersive optical shock waves in nonlocal nonlinear media. Experiments are performed using spatial beams in a thermal liquid cell, and results agree with a hydrodynamic theory of propagation.

光学 · 物理学 2009-11-13 Christopher Barsi , Wenjie Wan , Can Sun , Jason W. Fleischer

We study experimentally light localization at phase-slip waveguides and at the intersection of phase-slips in a two-dimensional (2D) square photonic lattice. Such system allows to observe a variety of effects, including the existence of…

We investigate generalized soliton-bearing systems in the presence of external perturbations. We show the possibility of the transport of solitons using external waves, provided the waveform and its velocity satisfy certain conditions. We…

统计力学 · 物理学 2015-06-25 J. A. Gonzalez , A. Marcano , B. A. Mello , L. Trujillo

We study temporally localized structures in doubly resonant degenerate optical parametric oscillators in the absence of temporal walk-off. We focus on states formed through the locking of domain walls between the zero and a non-zero…

斑图形成与孤子 · 物理学 2021-02-26 P. Parra-Rivas , L. Gelens , F. Leo

Nonlinear optical propagation in cholesteric liquid crystals (CLC) with a spatially periodic helical molecular structure is studied experimentally and modeled numerically. This periodic structure can be seen as a Bragg grating with a…

Bloch oscillations, the oscillatory motion of a quantum particle in a periodic potential, are one of the most fascinating effects of coherent quantum transport. Originally studied in the context of electrons in crystals, Bloch oscillations…