scholarly journals Enhanced optical Kerr effect method for a detailed characterization of the third-order nonlinearity of two-dimensional materials applied to graphene

2017 ◽  
Vol 96 (23) ◽  
Author(s):  
Evdokia Dremetsika ◽  
Pascal Kockaert
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Two Dimensional ◽  
Third Order ◽  
Detailed Characterization ◽  
The Third ◽  
Two Dimensional Materials ◽  
Third Order Nonlinearity ◽  
Effect Method

Measurement on the third-order optical nonlinearity of C70 and its poly-aminonitrile derivative by using the femtosecond optical Kerr effect

1999 ◽  
Vol 301 (3-4) ◽  
pp. 343-346 ◽  
Author(s):  
Tieqiao Zhang ◽  
Feng Wang ◽  
Hong Yang ◽  
Qihuang Gong ◽  
Xin An ◽  
...  
Keyword(s):  
Kerr Effect ◽  
Optical Nonlinearity ◽  
Optical Kerr Effect ◽  
Third Order ◽  
The Third

Characterization of the third-order nonlinearity of [(CH3-TXP)Cd]Cl

1999 ◽  
Author(s):  
Wenfang Sun ◽  
Clare C. Byeon ◽  
Michael M. McKerns ◽  
Christopher M. Lawson ◽  
Shiming Dong ◽  
...  
Keyword(s):  
Third Order ◽  
The Third ◽  
Third Order Nonlinearity

Measuring third-order susceptibility tensor elements of monolayer MoS2 using the optical Kerr effect method

2018 ◽  
Vol 113 (5) ◽  
pp. 051901 ◽  
Author(s):  
Fang Liu ◽  
Xin Zhao ◽  
Xiao-Qing Yan ◽  
Xiufeng Xin ◽  
Zhi-Bo Liu ◽  
...  
Keyword(s):  
Kerr Effect ◽  
Optical Kerr Effect ◽  
Monolayer Mos2 ◽  
Third Order ◽  
Susceptibility Tensor ◽  
Effect Method ◽  
Order Susceptibility

Optical Characterization of Silica Aerogel

1988 ◽  
Vol 121 ◽  
Author(s):  
Lawrence W. Hrubesh ◽  
Cynthia T. Alviso
Keyword(s):  
Silica Aerogel ◽  
Porous Silica ◽  
Optical Characterization ◽  
Optical Methods ◽  
Gradient Index ◽  
Two Dimensional ◽  
Two Dimensional Image ◽  
The Third ◽  
Third Dimension

ABSTRACTTwo optical methods are described for mapping the local variations of refractive index within monoliths of porous silica aerogel. One is an interferometrie measurement that produces “iso-index” fringes in a two dimensional image; an orthogonal view gives the third dimension information. The other method uses the deflection of a He-Ne laser beam to map the gradient index within a sample. The quantification of the measurements is described and the accuracy of the results is discussed.

Magneto-optical Kerr effect characterization of electrodeposited Y-junction magnetic nanostructures

2015 ◽  
Vol 117 (17) ◽  
pp. 17A751 ◽  
Author(s):  
Sachin Pathak ◽  
Jongill Hong ◽  
Jai Chaudhary ◽  
Manish Sharma
Keyword(s):  
Kerr Effect ◽  
Magnetic Nanostructures ◽  
Optical Kerr Effect ◽  
Magneto Optical Kerr Effect

Exact third-order structure functions for two-dimensional turbulence

2018 ◽  
Vol 851 ◽  
pp. 672-686 ◽  
Author(s):  
Jin-Han Xie ◽  
Oliver Bühler
Keyword(s):  
Structure Functions ◽  
Spectral Energy ◽  
Order Structure ◽  
Two Dimensional ◽  
Third Order ◽  
Transfer Rates ◽  
The Third ◽  
Random Forcing ◽  
Asymptotic Expressions ◽  
Special Case

We derive and investigate exact expressions for third-order structure functions in stationary isotropic two-dimensional turbulence, assuming a statistical balance between random forcing and dissipation both at small and large scales. Our results extend previously derived asymptotic expressions in the enstrophy and energy inertial ranges by providing uniformly valid expressions that apply across the entire non-dissipative range, which, importantly, includes the forcing scales. In the special case of white noise in time forcing this leads to explicit predictions for the third-order structure functions, which are successfully tested against previously published high-resolution numerical simulations. We also consider spectral energy transfer rates and suggest and test a simple robust diagnostic formula that is useful when forcing is applied at more than one scale.

A Two-Dimensional Potential Flow Model of the Wave Field Generated by a Semisubmerged Body in Heaving Motion

1988 ◽  
Vol 32 (02) ◽  
pp. 83-91
Author(s):  
X. M. Wang ◽  
M. L. Spaulding
Keyword(s):  
Free Surface ◽  
Boundary Conditions ◽  
Potential Flow ◽  
Flow Model ◽  
Second Order ◽  
Two Dimensional ◽  
Third Order ◽  
The Third ◽  
Potential Flow Model ◽  
Good Agreement

A two-dimensional potential flow model is formulated to predict the wave field and forces generated by a sere!submerged body in forced heaving motion. The potential flow problem is solved on a boundary fitted coordinate system that deforms in response to the motion of the free surface and the heaving body. The full nonlinear kinematic and dynamic boundary conditions are used at the free surface. The governing equations and associated boundary conditions are solved by a second-order finite-difference technique based on the modified Euler method for the time domain and a successive overrelaxation (SOR) procedure for the spatial domain. A series of sensitivity studies of grid size and resolution, time step, free surface and body grid redistribution schemes, convergence criteria, and free surface body boundary condition specification was performed to investigate the computational characteristics of the model. The model was applied to predict the forces generated by the forced oscillation of a U-shaped cylinder. Numerical model predictions are generally in good agreement with the available second-order theories for the first-order pressure and force coefficients, but clearly show that the third-order terms are larger than the second-order terms when nonlinearity becomes important in the dimensionless frequency range 1≤ Fr≤ 2. The model results are in good agreement with the available experimental data and confirm the importance of the third order terms.

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