Linear and Nonlinear Optical Properties of Mesoionic Oxyallyl Derivatives: Enhanced Non-Resonant Third Order Optical Nonlinearity in Croconate Dyes

2008 ◽  
Vol 112 (34) ◽  
pp. 13272-13280 ◽  
Author(s):  
Ch. Prabhakar ◽  
K. Yesudas ◽  
K. Bhanuprakash ◽  
V. Jayathirtha Rao ◽  
R. Sai Santosh Kumar ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Optical Nonlinearity ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Linear And Nonlinear

Interband-transition-modified third-order nonlinear optical properties of Al nanoshells in carbon disulfide

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 10038-10043 ◽  
Author(s):  
Guangyi Jia ◽  
Chungang Guo
Keyword(s):  
Optical Properties ◽  
Carbon Disulfide ◽  
Nonlinear Optical ◽  
Interband Transition ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Linear And Nonlinear

Al nanoshell geometry and the defined parameters used for simulations of linear and nonlinear optical properties.

Third-Order Nonlinear Optical Properties of a Series of Systematically Designed Conjugated Rigid-Rod Polyquinolines

1992 ◽  
Vol 247 ◽  
Author(s):  
Ashwini K. Agrawal ◽  
Samson A. Jenekhe ◽  
Herman Vanherzeele ◽  
Jeffrey S. Meth
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Scaling Law ◽  
Optical Nonlinearity ◽  
Nonlinear Optical Properties ◽  
Model Compounds ◽  
Third Order ◽  
Third Harmonic ◽  
The Third ◽  
Rigid Rod

ABSTRACTThe third-order nonlinear optical properties of thin films of two series of conjugated rigid-rod polyquinolines, exemplified by poly(2, 2'-(l, 4-phenylene)-6, 6'-bis(4-phenyl quinoline)) (PPPQ, 2d) and poly(2, 7-(l, 4-phenylene)-4, 9-diphenyl-l, 6-anthrazoline) (PPDA, 3d), were investigated by third harmonic generation spectroscopy. Of the nine polyquinolines with diverse backbone structures, PPPQ has the largest optical nonlinearity with a χ(3) (-3ω; ω, ω, ω) value of 3.2 × 10−12 esu and 3.3 × 10−11 esu in the off-resonant and three-photon resonant regions, respectively. A comparison of the nonresonant χ(3) of the series of nine systematically derived polyquinolines showed that a scaling law of the form χ(3) ∼ (λmax)v ∼ Eg-v does not hold; in fact, the nonresonant χ(3) was essentially independent of the optical bandgap. These results suggest that structure-χ(3) propeny relationships in polymers cannot be inferred from those of oligomers and model compounds.

Cubic Nonlinear Optical Properties of Thin Films of a Series of Aromatic Schiff Base Polymers

1992 ◽  
Vol 247 ◽  
Author(s):  
Chen-Jen Yang ◽  
Samson A. Jenekhe ◽  
Herman Vanherzeele ◽  
Jeffrey S. Meth
Keyword(s):  
Optical Properties ◽  
Schiff Base ◽  
Nonlinear Optical ◽  
Random Copolymer ◽  
Optical Nonlinearity ◽  
Nonlinear Optical Properties ◽  
Third Order ◽  
Third Harmonic ◽  
Schiff Base Polymers ◽  
Photon Resonance

ABSTRACTThe third-order nonlinear optical properties of a series of homopolymers and a random copolymer of conjugated aromatic Schiff base polymers have been investigated by picosecond third harmonic generation spectroscopy in the wavelength range 0.9–2.4 um. The off-resonant χ(3)(-3ω;ω, ω, ω) value at 2.4 μm was found to be 1.6×10−12esu for the parent polymer (PPI). 2, 5-Dimethoxy and 2, 5-dihydroxy substitutions or random colpolymerization was found to enhance the nonresonant optical nonlinearity of PPI by a factor of 1.5–4.5. 2-Methyl substitution lowered the χ(3) value. The three-photon resonance enhanced χ(3) of the polymers was in the range l.l×10−11 to 5.2×l0−11 esu. A three-level essential states model was found to describe the observed χ(3) spectra and the resulting fitting parameters were used to explain the observed trends in structure - χ(3) relationships.

Linear and Nonlinear Optical Properties of Small Silicon Clusters

1990 ◽  
Author(s):  
Tapio T. Rantala ◽  
Mark I. Stockman ◽  
Daniel A. Jelski ◽  
Thomas F. George
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Silicon Clusters ◽  
Linear And Nonlinear
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