Results 31 to 40 of about 1,020,785 (340)
Amplifying continuous wave phase conjugate mirror with strontium barium niobate [PDF]
, 1982 We report the use of Sr_(1−x) Ba_x Nb_2O_6 as an efficient holographic four‐wave mixing medium. We have used this material in a continuous wave phase conjugate mirror with reflectivity exceeding unity, and in a phase conjugate ...
Cronin-Golomb, Mark +4 more
core +1 more source
Calculation of the Stability Index in Parameter-Dependent Calculus of Variations Problems: Buckling of a Twisted Elastic Strut [PDF]
, 2002 We consider the problem of minimizing the energy of an inextensible elastic strut with length 1 subject to an imposed twist angle and force. In a standard calculus of variations approach, one first locates equilibria by solving the Euler--Lagrange ODE ...
Hoffman, Kathleen A. +2 more
core +2 more sources
Homomorphism Conjugacy versus Centralizer Actions in the Symmetric Group [PDF]
arXiv, 2022 We explore when generator-conjugate homomorphisms are conjugate and when element-conjugate homomorphisms are conjugate from abelian or dihedral groups to the symmetric group. We completely determine when such homomorphisms are conjugate in the case where the source group has two generators by studying centralizer actions in the target group.
arxiv
Semi-self-pumped phase-conjugate mirrors [PDF]
, 1987 We describe semi-self-pumped photorefractive phase-conjugate mirrors based on the unidirectional ring resonator and the double phase-conjugate mirror.
Cronin-Golomb, Mark, Yariv, Amnon
core +1 more source
Instantaneous complex conjugate resolved spectral domain and swept-source OCT using 3x3 fiber couplers [PDF]
, 2005 We report that the complex conjugate artifact in Fourier domain optical coherence tomography approaches (including spectral domain and swept source OCT) may be resolved by the use of novel interferometer designs based on 3x3 and higher order fiber ...
Choma, Michael A. +3 more
core +1 more source
Journal of Algebra, 2014 The action of any group on itself by conjugation and the corresponding conjugacy relation play an important role in group theory. There have been several attempts to extend the notion of conjugacy to semigroups. In this paper, we present a new definition of conjugacy that can be applied to an arbitrary semigroup and it does not reduce to the universal ...
António Malheiro +4 more
openaire +3 more sources
Vaccines, 2020 : The BclA3 glycoprotein is a major component of the exosporangial layer of Clostridium difficile spores and in this study we demonstrate that this glycoprotein is a major spore surface associated antigen.
Annie Aubry +10 more
doaj +1 more source
Exact solution of a nonlinear model of four-wave mixing and phase conjugation [PDF]
, 1982 An exact solution of a nonlinear model of holographic four-wave mixing is derived. An expression for the reflectivity of a phase-conjugate mirror with depleted pumps is presented.
Cronin-Golomb, Mark +3 more
core +1 more source
Density matrix renormalization group study of conjugated polymers with transverse pi-conjugation [PDF]
PHYSICAL REVIEW B 72, 212201 (2005), 2005 We report accurate numerical studies of excited state orderings in long hypothetical pi-conjugated oligomers in which the hydrogen atoms of trans-polyacetylene are replaced with conjugated sidegroups, within modified Hubbard models. There exists a range of the bare Coulomb repulsion for which the excited state ordering is conducive to photoluminescence
arxiv +1 more source