Search engine for discovering works of Art, research articles, and books related to Art and Culture
Javascript must be enabled to continue!
Nondipolar Structures With Threefold Symmetry For Nonlinear Optics
View through CrossRef
AbstractThe second‐order polarizabilities β(— 2ω; ω, ω) of six nondipolar NLO chromophores—1,3,5‐tris(isopropyl‐amino)‐2,4,6‐trinitrobenzene (1), 1,3,5‐tris(isopropylamino)‐2,4,6‐tris(trifluoro‐methylsulfonyl)benzene (2), tris(dimethyl‐imoniomethyl)methide diperchlorate (3), 2,4,6‐tris[4‐(N,N‐diethylamino)phenyl‐ethynyl]‐1,3,5‐triazine (4), 2,4,6‐tris[4‐(N,N‐diethylamino)phenyl]‐1,3,5‐triazine (5), and tris(2‐dimethylaminoethenyl)‐methinium perchlorate (6)—were studied by polarized hyper‐Rayleigh scattering (HRS). The NLO activity of these two‐dimensional NLO chromophores is attributed to three‐level contributions to the β values, for which different optimization strategies are investigated. Exceptionally large second‐order polarizabilities were observed for the conjugationally elongated structures: the β value of triazine 4 is 15 times larger than that of the one‐dimensional two‐level chromophore 4‐nitroaniline. Results obtained with the polarized HRS experiment are discussed with respect to local field corrections, calibration, and systematic sources of error.
Title: Nondipolar Structures With Threefold Symmetry For Nonlinear Optics
Description:
AbstractThe second‐order polarizabilities β(— 2ω; ω, ω) of six nondipolar NLO chromophores—1,3,5‐tris(isopropyl‐amino)‐2,4,6‐trinitrobenzene (1), 1,3,5‐tris(isopropylamino)‐2,4,6‐tris(trifluoro‐methylsulfonyl)benzene (2), tris(dimethyl‐imoniomethyl)methide diperchlorate (3), 2,4,6‐tris[4‐(N,N‐diethylamino)phenyl‐ethynyl]‐1,3,5‐triazine (4), 2,4,6‐tris[4‐(N,N‐diethylamino)phenyl]‐1,3,5‐triazine (5), and tris(2‐dimethylaminoethenyl)‐methinium perchlorate (6)—were studied by polarized hyper‐Rayleigh scattering (HRS).
The NLO activity of these two‐dimensional NLO chromophores is attributed to three‐level contributions to the β values, for which different optimization strategies are investigated.
Exceptionally large second‐order polarizabilities were observed for the conjugationally elongated structures: the β value of triazine 4 is 15 times larger than that of the one‐dimensional two‐level chromophore 4‐nitroaniline.
Results obtained with the polarized HRS experiment are discussed with respect to local field corrections, calibration, and systematic sources of error.
Related Results
Fundamental Symmetries and Symmetry Violations from High Resolution Spectroscopy
Fundamental Symmetries and Symmetry Violations from High Resolution Spectroscopy
AbstractAfter an introductory survey, we introduce the seven fundamental symmetries of physics in relation to the group of the molecular Hamiltonian and the current standard model ...
Symmetry and symmetry breaking in science and arts
Symmetry and symmetry breaking in science and arts
In this review article, symmetry and symmetry breaking are considered as complementary principles in science and arts. It starts with symmetry and symmetry breaking in early world ...
Symmetry and Symmetry Breaking in Science and Arts
Symmetry and Symmetry Breaking in Science and Arts
In this review article, symmetry and symmetry breaking are considered as complementary principles in science and arts. It starts with symmetry and symmetry breaking in early world ...
Automated Symmetry Exploitation in Engineering Analysis
Automated Symmetry Exploitation in Engineering Analysis
It is well known that one can exploit symmetry to speed-up engineering analysis and improve accuracy, at the same time. Not surprisingly, most CAE systems have standard ‘provisions...
Brain Activity in Response to Visual Symmetry
Brain Activity in Response to Visual Symmetry
A number of studies have explored visual symmetry processing by measuring event related potentials and neural oscillatory activity. There is a sustained posterior negativity (SPN) ...
A Framework for Detection of Exact Global and Partial Symmetry in 3D CAD Models
A Framework for Detection of Exact Global and Partial Symmetry in 3D CAD Models
The most common way to retrieve symmetry information (i.e., the planes and axes of symmetry) in 3D CAD models is through visual recognition by engineers. However, engineers are not...
Bilateral Symmetry of Jumping and Agility in Professional Basketball Players: Differentiating Performance Levels and Playing Positions
Bilateral Symmetry of Jumping and Agility in Professional Basketball Players: Differentiating Performance Levels and Playing Positions
Although functional asymmetry is very common and normal in professional athletes, the better interlimb symmetry between dominant and nondominant sides (bilateral symmetry) could co...
Nonlinear geometric multivariable control for unmanned aircraft flight system
Nonlinear geometric multivariable control for unmanned aircraft flight system
Purpose
Due to the important role of unmanned aircraft in military and human’s normal practical application, this paper aims to extend the interesting research ...