Degenerate Four wave Mixing Studies and Ultrafast Optical Kerr Effect Measurements of Third-order Nonlinear Optical Response in a Charge Transfer Organic Material

2011 ◽  
Author(s):  
S. Vijayakumar ◽  
P. Sudheesh ◽  
K. N. Sharafudeen ◽  
K. Chandrasekharan ◽  
P. Predeep ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Organic Material ◽  
Kerr Effect ◽  
Nonlinear Optical ◽  
Four Wave Mixing ◽  
Optical Kerr Effect ◽  
Wave Mixing ◽  
Third Order ◽  
Ultrafast Optical ◽  
A Charge

Theoretical and Experimental Studies of Third-Order Nonlinear Optical Susceptibilities of New p-N,N'-Diamethylaniline Tetrathiafulvalene Derivatives

2000 ◽  
Vol 660 ◽  
Author(s):  
B. Sahraoui ◽  
K.J. Pluciński ◽  
M. Makowaska-Janusik ◽  
I. V. Kityk ◽  
M. Salle ◽  
...  
Keyword(s):  
Quantum Chemical Calculations ◽  
Quantum Chemical ◽  
Nonlinear Optical ◽  
Experimental Studies ◽  
Physical Nature ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Electronic Contribution ◽  
Optical Nonlinearities ◽  
Third Order

ABSTRACTA study was made of third-order nonlinear optical susceptibilities of new tetrathiafulvalene (TTF) derivatives, using the degenerate four wave mixing (DFWM) method, as well as complex quantum chemical calculations. To understand the physical nature of the optical nonlinearities, we separated their electronic and nuclear contributions. We found that the electronic contribution to these nonlinearities predominated. Our investigations suggest that TTF may be a highly promising material for nonlinear optics (NLO).

Study on the Relations of Structure and the Ultrafast Optical Kerr Effect of Polynitriles

1997 ◽  
Vol 488 ◽  
Author(s):  
Q. Wang ◽  
Y. Y. Li ◽  
W. W. Pei ◽  
Y. K. He ◽  
C. Q. Luo ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Power Law ◽  
Kerr Effect ◽  
Nonlinear Optical ◽  
Optical Kerr Effect ◽  
Time Resolved ◽  
Chemical Polymerization ◽  
Ultrafast Optical ◽  
Ft Ir ◽  
Effect Technique

AbstractA series of polybenzonitrile derivatives, prepared by plasma glow discharge processes or chemical polymerization, were characterized by FT-IR, UV-Vis, GPC and VPO etc. The secondorder nonlinear optical hyperpolarizability γ of various benzonitrile monomers and their, polymers were measured by the femtosecond time-resolved optical Kerr effect technique, and the structureproperty relationships were discussed. The power law dependence of γ on the averagepolymerization- degree of several polybenzonitrile derivatives were also reported.

Third-Order Nonlinear Optical Susceptibilities of Solutions of Some Mesogenic Metallotetraphenylporphyrins by Nanosecond Degenerate Four-Wave Mixing Method

1992 ◽  
Vol 21 (2) ◽  
pp. 281-284 ◽  
Author(s):  
Toru Sakaguchi ◽  
Yo Shimizu ◽  
Masaru Miya ◽  
Toshio Fukumi ◽  
Koji Ohta ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Third Order ◽  
Mixing Method ◽  
Degenerate Four Wave Mixing

Nonlinear Optical Properties of Rigid Rod Polymers and Model Compounds

1988 ◽  
Vol 134 ◽  
Author(s):  
Paras N. Prasad
Keyword(s):  
Nonlinear Optical ◽  
Wave Length ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Structural Variations ◽  
Model Compounds ◽  
Third Order ◽  
Nonlinear Optical Susceptibility ◽  
Optical Susceptibility ◽  
Rigid Rod

ABSTRACTPicosecond and femtosecond degenerate four-wave mixing have been used to measure third-order nonlinear optical susceptibility of several rigid-rod polymers and model compounds. A significant X(3) with femtosecond response was observed. The effects of processing conditions and structural variations on X(3) were studied. Four-wave mixing studies can also be conveniently used to generate ultrasonic phonons of well defined wave length and propagation direction. From this result one can investigate mechanical properties of polymers. Using this technique both the longitudinal and shear components of the elastic moduli for a uniaxially oriented rigid-rod polymer, poly-p-phenylene bis benzooxazole (PBO), were determined.

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