Wavelength Dependence of the Second-Order Nonlinear Susceptibility of Harmonic Nanoparticles

2018 ◽  
Author(s):  
Jérémy Riporto ◽  
Mathias Urbain ◽  
Yannick Mugnier ◽  
Luigi Bonacina ◽  
Ronan Le Dantec
Keyword(s):  
Wavelength Dependence ◽  
Second Order ◽  
Nonlinear Susceptibility

scholarly journals A Molecular Architectural Approach to Second-Order Nonlinear Optical Materials

1995 ◽  
Vol 392 ◽  
Author(s):  
Xiaoguang Yang ◽  
Duncan McBranch ◽  
Basil Swanson ◽  
Dequan Li
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Fused Silica ◽  
Second Order ◽  
Nonlinear Susceptibility ◽  
Design And Synthesis ◽  
Fundamental Wavelength ◽  
Assembled Monolayers ◽  
Methylene Groups ◽  
Nlo Chromophores

AbstractThe design and synthesis of a family of calix[4]arene-based nonlinear optical (NLO) chromophores are discussed. The calixarene chromophores are macrocyclic compounds consisting of four simple D-π-A units bridged by methylene groups. These molecules were synthesized such that four D-π-A units of the calix[4]arene were aligned along the same direction with the calixarene in a cone conformation. These nonlinear optical super-chromophores were subsequently fabricated into covalently bound self-assembled monolayers on the surfaces of fused silica and silicon. Spectroscopic second harmonic generation (SHG) measurements were carried out to determine the absolute value of the dominant element of the second-order nonlinear susceptibility, d33, and the average molecular alignment, ψ. We find a value of d33 = 60 pm/V at a fundamental wavelength of 890 nm, and ψ˜ 36° with respect to the surface normal.

scholarly journals SECOND-ORDER NONLINEAR SUSCEPTIBILITY ENHANCEMENT IN GALLIUM NITRIDE NANOWIRES (INVITED)

2020 ◽  
Vol 168 ◽  
pp. 25-30
Author(s):  
Kangwei Wang ◽  
Haoliang Qian ◽  
Zhaowei Liu ◽  
Paul K. L. Yu
Keyword(s):  
Gallium Nitride ◽  
Second Order ◽  
Nonlinear Susceptibility

Second-order nonlinear susceptibility in As2S3 chalcogenide thin glass films

2000 ◽  
Vol 36 (8) ◽  
pp. 733 ◽  
Author(s):  
Y. Quiquempois ◽  
A. Villeneuve ◽  
D. Dam ◽  
K. Turcotte ◽  
J. Maier ◽  
...  
Keyword(s):  
Second Order ◽  
Nonlinear Susceptibility ◽  
Thin Glass ◽  
Glass Films

Creation of a second-order nonlinear susceptibility in As2S3 chalcogenide glass thin layers.

2000 ◽  
Author(s):  
Y. Quiquempois ◽  
A. Villeneuve ◽  
D. Dam ◽  
K. Turcotte ◽  
J. Maier ◽  
...  
Keyword(s):  
Chalcogenide Glass ◽  
Second Order ◽  
Thin Layers ◽  
Nonlinear Susceptibility

Influence of electronic temperature and distribution on the second-order surface nonlinear susceptibility of metals

2001 ◽  
Vol 78 (21) ◽  
pp. 3211-3213 ◽  
Author(s):  
Chunlei Guo ◽  
George Rodriguez ◽  
Mark Hoffbauer ◽  
Antoinette J. Taylor
Keyword(s):  
Second Order ◽  
Nonlinear Susceptibility ◽  
Electronic Temperature ◽  
Order Surface

Photo-induced second-order nonlinear susceptibility in lead-silicate glasses and in planar waveguides on their basis

1994 ◽  
Author(s):  
Victor I. Kopp ◽  
Igory V. Mochalov ◽  
Nikolai V. Nikonorov ◽  
Ildar F. Salahetdinov
Keyword(s):  
Second Order ◽  
Planar Waveguides ◽  
Silicate Glasses ◽  
Nonlinear Susceptibility ◽  
Lead Silicate

Symmetries of second-order nonlinear susceptibility tensor for GaSe by investigating THz generation

2010 ◽  
Author(s):  
Guibao Xu ◽  
Guan Sun ◽  
Yujie J. Ding ◽  
Ioulia B. Zotova ◽  
Krishna C. Mandal ◽  
...  
Keyword(s):  
Second Order ◽  
Nonlinear Susceptibility ◽  
Susceptibility Tensor ◽  
Thz Generation

scholarly journals The Photochemistry of Organic Materials for Photonic Devices

2021 ◽  
Author(s):  
◽  
Ayla Penelope Middleton
Keyword(s):  
Photonic Devices ◽  
Optically Active ◽  
Second Order ◽  
Nonlinear Susceptibility ◽  
Dimethyl Formamide ◽  
Nonlinear Behaviour ◽  
Organic Chromophores ◽  
Aggregation Behaviour ◽  
Very High ◽  
Photonics Devices

<p>Optically active organic chromophores have attracted much interest in recent years for their potential for use in photonic devices. Chromophores such as compound (1) have been found to have a very high second order nonlinear susceptibility ( β ) value of 650 × 10⁻³⁰esu in dimethyl formamide.¹ The performance of 1 in a polymer film is much lower than this due to the formation of aggregates which hinder the poling process necessary to ensure a noncentrosymmetric arrangement of the molecules in order to display second order nonlinear behaviour.  The molecular aggregation behaviour of a set of second order nonlinear compounds based on compound 1 have been studied in this thesis. These compounds share the backbone shown in figure 1 with pendant groups added to the R₁ R₂ and R₃ positions, with the aim of finding substituent groups that can be added to the optically active merocyanine backbone that reduce the aggregation and increase the solubility of the compounds. This in turn will make them more suitable for use in photonics devices.  It was found that a C₁₁H₂₃ alkyl chain added to the R₃ position made the largest contribution to decreasing aggregation. Bulky groups on the R₁ and R₂ positions also reduced aggregation. As a result compounds 5 and 8, with R₃ = C₁₁H₂₃ and bulky groups attached displayed the least aggregation of the compounds studied.  ¹ See Figure 1 (pg. i): Merocyanine backbone with substituent positions marked.</p>

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