Generation of ultrashort pulses (USP) in a regime with strong overlapping of the saturation stage of an active medium and that of a bleachable filter

1981 ◽  
Vol 24 (6) ◽  
pp. 485-493
Author(s):  
L. S. Kornienko ◽  
N. V. Kravtsov ◽  
Yu. P. Yatsenko
Keyword(s):  
Active Medium ◽  
Ultrashort Pulses ◽  
Saturation Stage ◽  
Bleachable Filter

scholarly journals Ультракороткие импульсы с широким спектром излучения в волоконных лазерах с пассивной синхронизацией мод

2020 ◽  
Vol 128 (4) ◽  
pp. 505
Author(s):  
А.К. Комаров ◽  
К.П. Комаров ◽  
Л.М. Чжао
Keyword(s):  
Numerical Simulation ◽  
Active Medium ◽  
Fiber Lasers ◽  
Radiation Spectrum ◽  
Ultrashort Pulses ◽  
Spectral Width ◽  
Gain Bandwidth ◽  
Laser Active Medium

On basis of numerical simulation and analytical calculations, the generation of fiber lasers in the regime of stationary ultrashort pulses with an extremely wide radiation spectrum is studied. It is shown that the spectral width of the generated pulses can be several times greater than the gain bandwidth of the laser active medium.

MAGNETOFLUIDIC MATERIAL AS AN ACTIVE MEDIUM FOR ACOUSTICAL SENSORS

1990 ◽  
Vol 51 (C2) ◽  
pp. C2-903-C2-906
Author(s):  
M. A. SARBU ◽  
M. I. PISO
Keyword(s):  
Active Medium

Functional Failures and Noise Arising under the Effect of Powerful Ultrashort Pulses on Mobile Phones and Radio Transmitters

2004 ◽  
Vol 62 (11) ◽  
pp. 971-976
Author(s):  
V. B. Avdeev ◽  
D. V. Avdeeva ◽  
A. V. Berdyshev ◽  
G. V. Makarov ◽  
S. N. Panychev ◽  
...  
Keyword(s):  
Mobile Phones ◽  
Ultrashort Pulses ◽  
Radio Transmitters

Ultrashort pulses propagation through different approaches of the Split-Step Fourier method

2018 ◽  
Vol 1 (3) ◽  
pp. 2
Author(s):  
José Stênio De Negreiros Júnior ◽  
Daniel Do Nascimento e Sá Cavalcante ◽  
Jermana Lopes de Moraes ◽  
Lucas Rodrigues Marcelino ◽  
Francisco Tadeu De Carvalho Belchior Magalhães ◽  
...  
Keyword(s):  
Energy Conservation ◽  
Optical Pulse ◽  
Time Window ◽  
Fourier Method ◽  
Ultrashort Pulses ◽  
Nonlinear Effects ◽  
Single Mode ◽  
Time Algorithm ◽  
Optical Pulses ◽  
Running Time

Simulating the propagation of optical pulses in a single mode optical fiber is of fundamental importance for studying the several effects that may occur within such medium when it is under some linear and nonlinear effects. In this work, we simulate it by implementing the nonlinear Schrödinger equation using the Split-Step Fourier method in some of its approaches. Then, we compare their running time, algorithm complexity and accuracy regarding energy conservation of the optical pulse. We note that the method is simple to implement and presents good results of energy conservation, besides low temporal cost. We observe a greater precision for the symmetrized approach, although its running time can be up to 126% higher than the other approaches, depending on the parameters set. We conclude that the time window must be adjusted for each length of propagation in the fiber, so that the error regarding energy conservation during propagation can be reduced.

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