Uv-Curable Epoxy Based Second Order Nonlinear Optical Material

1992 ◽  
Vol 247 ◽  
Author(s):  
Ru Jong Jeng ◽  
Yong Ming Chen ◽  
Braja K. Mandal ◽  
Jayant Kumar ◽  
Sukant K. Tripathy
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Nonlinear Optical Material ◽  
Film Sample ◽  
Ambient Conditions ◽  
Uv Curable ◽  
Degradation Temperature ◽  
Linear Optical Properties ◽  
Nlo Chromophores

ABSTRACTEpoxy based material incorporating 4-(4'-nitrophenylazo) phenylamine has been synthesized and subsequently functionalized with cinnamoyl groups. These materials can be easily solution-processed into thin films by spin-coating. The uncrosslinked polymer has excellent thermal and linear optical properties. Glass transition temperature of 115°C and degradation temperature (air) of 278°C were recorded.This material exhibits large second order nonlinear optical (NLO) effects subsequent to poling. In a poled film sample, second harmonic generation coefficient, d33, of 34 pm/V was observed at 1.06 μm. Crosslinking is brought about by exposure to UV radiation at 254 nm wavelength. In a poled and crosslinked film sample, a d33 of 22 pm/V was observed. This d33 value is less than the d33 value of the poled and uncrosslinked film sample due to photo-induced cis-trans isomerization and partial degradation of the NLO chromophores. Nevertheless, the poled and crosslinked film shows a much more stable second order response at ambient conditions compared to the poled film which has not been crosslinked.

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.

A nonlinear optical active polymer film based on Pd(ii) dithione/dithiolate second-order NLO chromophores

2016 ◽  
Vol 45 (43) ◽  
pp. 17431-17438 ◽  
Author(s):  
D. Espa ◽  
L. Pilia ◽  
L. Marchiò ◽  
F. Artizzu ◽  
G. Di Carlo ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Polymer Film ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Nlo Chromophores ◽  
First Time

A film of [Pd(Dod2pipdt)(dmit)] incorporated into a polymethylmethacrylate matrix, showing a good second-harmonic generation, has been prepared for the first time in the class of dithione–dithiolate 2ndorder NLO-chromophores.

Second-order nonlinear optical properties of polyphosphazenes containing multi-dipolar and imidazolebased chromophores

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Pan Yang ◽  
Tang Xiaozhen
Keyword(s):  
Nonlinear Optical ◽  
Second Harmonic ◽  
Coupling Reaction ◽  
Second Order ◽  
Azo Coupling ◽  
H Nmr ◽  
New Type ◽  
Ft Ir ◽  
Nlo Chromophores ◽  
Second Order Nonlinearity

AbstractThe synthesis and second-order nonlinearity study of several new polyphosphazenes were described, which are composed of a new type of Yshaped nonlinear optical (NLO) chromophores attached onto polyphosphazene. They were obtained via a post-azo coupling reaction. The resulting materials were characterized by means of 1H NMR, 31P NMR, FT-IR, UV-vis, GPC and DSC. Chromophore contents up to 14 mol% have been realized. The polymers have high glass-transition temperatures, good optical transparency, and the poled film of P3- P8 revealed a resonant d33 value in the range of 11-42 pm/V by second harmonic generation (SHG) measurements.

Structural Modification from Centrosymmetric Rb4Hg2Ge2S8 to Noncentrosymmetric (Na3Rb)Hg2Ge2S8: Mixed Alkali-metals Strategy for Infrared Nonlinear Optical Material Design

2022 ◽  
Author(s):  
Chunlan Tang ◽  
Wen-Hao Xing ◽  
Fei Liang ◽  
mengran sun ◽  
Jian Tang ◽  
...  
Keyword(s):  
Alkali Metals ◽  
Nonlinear Optical ◽  
Structural Modification ◽  
Material Design ◽  
Second Order ◽  
Optical Material ◽  
Nonlinear Optical Material ◽  
Mixed Alkali ◽  
New Strategy ◽  
Nlo Materials

Noncentrosymmetric (NCS) structure is the precondition for second-order nonlinear optical (NLO) materials. In this work, we present a new strategy for constructing NCS structures, that mixed alkali-metals made a new...

Li8NaRb3(SO4)6·2H2O as a new sulfate deep-ultraviolet nonlinear optical material

2018 ◽  
Vol 6 (45) ◽  
pp. 12240-12244 ◽  
Author(s):  
Yanqiang Li ◽  
Sangen Zhao ◽  
Pai Shan ◽  
Xianfeng Li ◽  
Qingran Ding ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Material ◽  
Type I ◽  
Nonlinear Optical Material ◽  
Deep Ultraviolet

A new sulfate Li8NaRb3(SO4)6·2H2O exhibits a short cutoff edge below λ < 190 nm and has a moderate second-harmonic generation response in type-I phase-matchable behavior.

ChemInform Abstract: A New UV Nonlinear Optical Material CsZn2B3O7: ZnO4Tetrahedra Double the Efficiency of Second-Harmonic Generation.

ChemInform ◽  
2014 ◽  
Vol 45 (18) ◽  
pp. no-no
Author(s):  
Sangen Zhao ◽  
Jia Zhang ◽  
Shu-quan Zhang ◽  
Zhihua Sun ◽  
Zheshuai Lin ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Material ◽  
Nonlinear Optical Material

scholarly journals Triphenylamine-based allylidenemalononitrile chromophores: synthesis, and photophysical and second-order nonlinear optical properties

2018 ◽  
Vol 42 (18) ◽  
pp. 15052-15060 ◽  
Author(s):  
Emine Çatal ◽  
Ergin Keleş ◽  
Nurgül Seferoğlu ◽  
Sylvain Achelle ◽  
Alberto Barsella ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Second Order ◽  
Nonlinear Optical Properties ◽  
Nlo Chromophores

A series of NLO chromophores based on a mono-, di- or tri-substituted triphenylamine core and allylidenemalononitrile fragments has been designed.

A beryllium-free deep-UV nonlinear optical material CsNaMgP2O7with honeycomb-like topological layers

2018 ◽  
Vol 6 (15) ◽  
pp. 3910-3916 ◽  
Author(s):  
Sangen Zhao ◽  
Yi Yang ◽  
Yaoguo Shen ◽  
Xiaodong Wang ◽  
Qingran Ding ◽  
...  
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Optical Material ◽  
Nonlinear Optical Material ◽  
Deep Uv

Beryllium-free deep-UV nonlinear optical CsNaMgP2O7consists of honeycomb-like topological layers, which should be attributable to an enhanced second harmonic generation response.

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