New approach to computer simulation of femtosecond pulse propagation in a nonlinear medium

1998 ◽  
Author(s):  
Vyacheslav A. Trofimov
Keyword(s):  
Computer Simulation ◽  
Nonlinear Medium ◽  
Femtosecond Pulse ◽  
Pulse Propagation ◽  
New Approach

Transient Analysis and Simulation of Pitting Corrosion for the Estimation of Noise Resistance

CORROSION ◽  
2000 ◽  
Vol 56 (9) ◽  
pp. 928-934
Author(s):  
G. Miramontes de León ◽  
D. C. Farden ◽  
D. E. Tallman
Keyword(s):  
Computer Simulation ◽  
Pitting Corrosion ◽  
Transient Analysis ◽  
Electrochemical Noise ◽  
Electrochemical Impedance ◽  
Transient Behavior ◽  
Noise Resistance ◽  
New Approach ◽  
Noise Data ◽  
Current Transients

Abstract A new approach for the measurement of noise resistance based on the transient behavior of pitting corrosion is presented. Potential noise and current transients have been recognized as a characteristic behavior of pitting corrosion. This new approach uses the transient information present during corrosion as a way to estimate the noise resistance of coated metals directly. Computer simulation and analytical results are presented, indicating that the new technique can be applied to the problem of noise resistance estimation. This new approach was applied to experimental electrochemical noise data obtained with commercial electrochemical impedance spectroscopy (EIS)/electrochemcial noise measurement (ENM) equipment.

RESTRICTED SOLID-ON-SOLID MODEL: FROM LOCAL MORPHOLOGY TO CORRELATION FUNCTIONS AND SCALING EXPONENTS

2004 ◽  
Vol 18 (06) ◽  
pp. 827-840
Author(s):  
CHIH-CHUN CHIEN ◽  
NING-NING PANG ◽  
WEN-JER TZENG
Keyword(s):  
Computer Simulation ◽  
Probability Distribution ◽  
Correlation Functions ◽  
Master Equations ◽  
Interfacial Phenomena ◽  
Solid Model ◽  
Direct Simulation ◽  
Kpz Equation ◽  
Scaling Exponents ◽  
New Approach

We study the restricted solid-on-solid (RSOS) model by grouping consecutive sites into local configurations and obtain the master equations of the probability distribution of these local configurations in closed forms. The obtained solutions to these equations fit very well with those from direct computer simulation of the RSOS model. To demonstrate the effectiveness of this new approach for studying interfacial phenomena, we then calculate the correlation functions and even scaling exponents based on this obtained probability distribution of local configurations. The results are also consistent very well with those obtained from the KPZ equation or direct simulation of the RSOS model.

Efficient simulation of unidirectional pulse propagation in high-contrast nonlinear nanowaveguides

2013 ◽  
Vol 2 (1) ◽  
Author(s):  
Jonathan Andreasen ◽  
Miroslav Kolesik
Keyword(s):  
Total Internal Reflection ◽  
Femtosecond Pulse ◽  
Transverse Direction ◽  
Pulse Propagation ◽  
Improved Method ◽  
Long Distance ◽  
Efficient Simulation ◽  
Index Contrast ◽  
Propagation Methods ◽  
Beam Propagation Methods

AbstractThis work demonstrates an improved method to simulate long-distance femtosecond pulse propagation in highcontrast nanowaveguides. Different from typical beam propagation methods, the foundational tool here is capable of simulating strong spatiotemporal waveform reshaping and extreme spectral dynamics. Meanwhile, the ability to fully capture effects due to index contrast in the transverse direction is retained, without requiring a decomposition of the electric field in terms of waveguide modes. These simulations can be computationally expensive, however, so cost is reduced in the improved method by considering only the waveguide core. Fields in the cladding are then properly accounted for through a boundary condition suitable for the case of total internal reflection.

Femtosecond pulse propagation near a two-photon transition in a semiconductor quantum-dot waveguide

1996 ◽  
Vol 21 (9) ◽  
pp. 659 ◽  
Author(s):  
P. T. Guerreiro ◽  
S. I. Najafi ◽  
J. Mackenzie ◽  
N. Peyghambarian ◽  
S. G. Lee ◽  
...  
Keyword(s):  
Quantum Dot ◽  
Femtosecond Pulse ◽  
Pulse Propagation ◽  
Semiconductor Quantum Dot ◽  
Two Photon ◽  
Photon Transition

scholarly journals Holographic capture of femtosecond pulse propagation

2006 ◽  
Vol 100 (6) ◽  
pp. 063104 ◽  
Author(s):  
Martin Centurion ◽  
Ye Pu ◽  
Demetri Psaltis
Keyword(s):  
Femtosecond Pulse ◽  
Pulse Propagation

scholarly journals STUDY OF CHIRP CHARACTERISTICS OF FEMTOSECOND PULSE PROPAGATION IN CONJUGATED POLYMER

1997 ◽  
Vol 46 (11) ◽  
pp. 2174
Author(s):  
ZHAO YING-QIAO ◽  
ZHU HE-YUAN ◽  
LIU JIAN-HUA ◽  
SUN-DIE-CHI ◽  
LI FU-MING
Keyword(s):  
Conjugated Polymer ◽  
Femtosecond Pulse ◽  
Pulse Propagation
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