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The switching and optical properties of phase-change thin films are actively investigated for future smart optical devices. The possibility of having more than one stable state, the large optical contrast between phases, and the fast and…

Optics · Physics 2024-02-15 Daniel T. Yimam , Minpeng Liang , Jianting Ye , Bart J. Kooi

Clarifying the contribution of various atoms and structural units formed in nonlinear optical (NLO) crystal materials to macroscopic optical response is crucial for NLO crystal design. In this work, the rigorous atomic space tessellating…

Optics · Physics 2024-10-08 Yang Chi

This paper is the first in a series of three devoted to the smooth classification of simply connected elliptic surfaces. The method is to compute some coefficients of Donaldson polynomials of $SO(3)$ invariants whose second Stiefel-Whitney…

alg-geom · Mathematics 2008-02-03 Robert Friedman

Metasurfaces represent a powerful paradigm of optical engineering that enables one to control the flow of light across material interfaces. We report on a discovery that metallic metasurfaces of a certain type respond differently to…

Optics · Physics 2019-11-12 T. Frank , O. Buchnev , T. Cookson , M. Kaczmarek , P. Lagoudakis , V. A. Fedotov

To find a suitable framework for nonlinear crystal optics(NCO), we have revisited linear crystal optics(LCO). At the methodological level, three widely used plane wave bases are compared in terms of eigenanalysis in reciprocal space and…

Optics · Physics 2025-10-20 Chenzhu Xie , Yong Zhang

We propose a fast and accurate surface reconstruction algorithm for unorganized point clouds using an implicit representation. Recent learning methods are either single-object representations with small neural models that allow for high…

Computer Vision and Pattern Recognition · Computer Science 2025-06-11 Siddhant Ranade , Gonçalo Dias Pais , Ross Tyler Whitaker , Jacinto C. Nascimento , Pedro Miraldo , Srikumar Ramalingam

Accurately reconstructing road surfaces is pivotal for various applications especially in autonomous driving. This paper introduces a position encoding Multi-Layer Perceptrons (MLPs) framework to reconstruct road surfaces, with input as…

Computer Vision and Pattern Recognition · Computer Science 2024-05-29 Ruibo Wang , Song Zhang , Ping Huang , Donghai Zhang , Haoyu Chen

We analyze the electrostatic stability of insulating surfaces in the framework of the bulk modern theory of polarization. We show that heuristic arguments based on a fully ionic limit find formal justification at the microscopic level, even…

Materials Science · Physics 2015-05-30 Massimiliano Stengel

We propose a theoretical model to describe the strain-induced linear electro-optic (Pockels) effect in centro-symmetric crystals. The general formulation is presented and the specific case of the strained silicon is investigated in detail…

Optics · Physics 2016-12-28 Costanza Lucia Manganelli , Paolo Pintus , Claudio Bonati

The efficiency of acoustooptic (AO) diffraction in a-BaB2O4 and Li2B4O7 crystals is studied experimentally. The crystals are shown to be quite good AO materials. The efficiency of AO diffraction in a-BaB2O4 reaches h=30% at the electric…

General Physics · Physics 2007-08-16 I. Martynyuk-Lototska , T. Dudok , O. Krupych , V. Adamiv , Ye. Smirnov , R. Vlokh

This paper concerns optical properties of the isotropic phase above the isotropic-cholesteric transition and of the blue phase BP III. We introduce an effective index, which describes spatial dispersion effects such as optical rotation,…

Soft Condensed Matter · Physics 2009-11-07 D. Lacoste , P. J. Collings , T. C. Lubensky

IR induced piezo optic effect (POE) in PbTe:Ca crystals was found under the influence of nanosecond pulse CO2 laser with a wavelength of 10.6 micro meters. It was shown that addition of Ca leads to an increase of the POE tensor coefficient.…

Periodic layered media can reflect strongly for all incident angles and polarizations in a given frequency range. Quarter-wave stacks at normal incidence are commonplace in the design of such omnidirectional reflectors. We discuss…

Optics · Physics 2009-11-10 T. Yonte , J. J. Monzon , A. Felipe , L. L. Sanchez-Soto

In order to explain the anisotropic Rashba-Bychkov effect observed in several metallic surface-state systems, we use k.p perturbation theory with a simple group-theoretical analysis and construct effective Rashba Hamiltonians for different…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 Sz. Vajna , E. Simon , A. Szilva , K. Palotas , B. Ujfalussy , L. Szunyogh

We demonstrate how broadband angular selectivity can be achieved with stacks of one-dimensionally periodic photonic crystals, each consisting of alternating isotropic layers and effective anisotropic layers, where each effective anisotropic…

We have used a scanning tunneling microscope to demonstrate that a single CuO_2 plane can form a stable and atomically ordered layer at the surface of Bi_2Sr_2CaCu_2O_{8+delta}. In contrast to previous studies on high-T_c surfaces, the…

Superconductivity · Physics 2009-11-07 S. Misra , S. Oh , D. J. Hornbaker , T. DiLuccio , J. N. Eckstein , A. Yazdani

Nonlinear optical features of a plane structure consisted of silicon disks placed periodically on a silver substrate have been studied in the Littrow reflection scenario. The structure manifests a bistable resonant reflective ability.…

We define three combinatorial models for \hat{sl(n)} crystals, parametrized by partitions, configurations of beads on an `abacus', and cylindric plane partitions, respectively. These are reducible, but we can identify an irreducible…

Quantum Algebra · Mathematics 2010-04-21 Peter Tingley

We describe two crystal structures on set-valued decomposition tableaux. These provide the first examples of interesting "$K$-theoretic" crystals on shifted tableaux. Our first crystal is modeled on a similar construction of Monical,…

Combinatorics · Mathematics 2026-01-05 Eric Marberg , Kam Hung Tong

We calculate a projective space of essential measured laminations in a surface pair, which will be used in another paper to help describe spaces of "finite height laminations."

Geometric Topology · Mathematics 2014-04-15 Ulrich Oertel
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