Quadratic Nonlinearities and Turbulence in a Laser System

1978 ◽  
pp. 975-987
Author(s):  
F. T. Arecchi ◽  
A. M. Ricca

Entropy ◽  
2019 ◽  
Vol 21 (1) ◽  
pp. 34 ◽  
Author(s):  
Hayder Natiq ◽  
Mohamad Rushdan Md Said ◽  
Nadia M. G. Al-Saidi ◽  
Adem Kilicman

Derived from Lorenz-Haken equations, this paper presents a new 4D chaotic laser system with three equilibria and only two quadratic nonlinearities. Dynamics analysis, including stability of symmetric equilibria and the existence of coexisting multiple Hopf bifurcations on these equilibria, are investigated, and the complex coexisting behaviors of two and three attractors of stable point and chaotic are numerically revealed. Moreover, a conducted research on the complexity of the laser system reveals that the complexity of the system time series can locate and determine the parameters and initial values that show coexisting attractors. To investigate how much a chaotic system with multistability behavior is suitable for cryptographic applications, we generate a pseudo-random number generator (PRNG) based on the complexity results of the laser system. The randomness test results show that the generated PRNG from the multistability regions fail to pass most of the statistical tests.



Author(s):  
Jason R. Heffelfinger ◽  
C. Barry Carter

Yttria-stabilized zirconia (YSZ) is currently used in a variety of applications including oxygen sensors, fuel cells, coatings for semiconductor lasers, and buffer layers for high-temperature superconducting films. Thin films of YSZ have been grown by metal-organic chemical vapor deposition, electrochemical vapor deposition, pulse-laser deposition (PLD), electron-beam evaporation, and sputtering. In this investigation, PLD was used to grow thin films of YSZ on (100) MgO substrates. This system proves to be an interesting example of relationships between interfaces and extrinsic dislocations in thin films of YSZ.In this experiment, a freshly cleaved (100) MgO substrate surface was prepared for deposition by cleaving a lmm-thick slice from a single-crystal MgO cube. The YSZ target material which contained 10mol% yttria was prepared from powders and sintered to 85% of theoretical density. The laser system used for the depositions was a Lambda Physik 210i excimer laser operating with KrF (λ=248nm, 1Hz repetition rate, average energy per pulse of 100mJ).



2006 ◽  
Vol 133 ◽  
pp. 701-703
Author(s):  
J. D. Zuegel ◽  
V. Bagnoud ◽  
J. Bromage ◽  
I. A. Begishev ◽  
J. Puth






Author(s):  
T. D. McCay ◽  
J. B. Bible ◽  
R. E. Mueller ◽  
M. H. McCay ◽  
C. M. Sharp ◽  
...  


Author(s):  
Volker Schulze ◽  
Mateusz Chlipala ◽  
Rüdiger Pabst


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