Thermal self-interaction of annular laser beams in a moving medium

Vorob'ev, V V; Murav'ev, N. I.; Sorokin, Yu. M.; Shemetov, V V

doi:10.1070/qe1977v007n11abeh004119

Cited by 6 publications

(1 citation statement)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Fleck et al proposed a four-dimensional (4D) computer code of the time-dependent propagation of high-power laser beams to investigate the thermal blooming effect [43]. Moreover, the effect of thermal blooming on annular beams, airy beams, Hermite-Gaussian beams, and vortex beams has been studied in detail [44][45][46][47]. With the development of the CBC technology, the studies of the effect of thermal blooming on the beam array have also been carried out in recent years [48][49][50][51].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Blooming on the Higher-Order Mode Fiber Laser Array Propagation Through the Atmosphere

Zhang

Hou²,

Deng³

et al. 2022

Front. Phys.

View full text Add to dashboard Cite

The influence of thermal blooming on the propagation properties of higher-order mode (HOM) fiber laser array is studied by using the algorithm for simulating the laser beam propagation in the atmosphere. Based on the multiphase screen method and finite-difference method, the four-dimensional (4D) computer code of time-dependent propagation is designed to simulate the propagation of HOM fiber laser array through the atmosphere. In this study, the laser energy focusability of the LP11 mode beam array is investigated in detail for different beamlet arrangements, transverse wind speed, and the content of LP01 mode under the conditions of thermal blooming. In free space, the focal shape of the LP11 mode beam array depends on the arrangement of the second circle of the initial beam array, whereas the influence of the central beamlets is weak. The number of side lobes can be tailored by changing the arrangement of the beamlets. In contrast, under the conditions of thermal blooming, the central beamlet has a significant effect on focal beam shape. It is demonstrated that the laser energy focusability can be improved by rotating the central beamlet or increasing the transverse wind speed. As the content of the LP01 mode increases, the energy is gradually concentrated from the side lobes to the center lobe. Furthermore, the effects of initial beam array arrangements on the energy focus and focal shape are investigated. The optimal arrangement for obtaining high energy focusability is discussed in detail. These results could provide useful references for applications of the HOM beam array.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Blooming on the Higher-Order Mode Fiber Laser Array Propagation Through the Atmosphere

Zhang

Hou²,

Deng³

et al. 2022

Front. Phys.

View full text Add to dashboard Cite

show abstract

Numerical and experimental simulation of the thermal selfaction of laser beams over a path in a medium moving at a variable velocity

Agrovskii¹,

Vorob'ev²,

Kallistratova³

et al. 1978

Sov. J. Quantum Electron.

View full text Add to dashboard Cite

The non-uniform R C line, constructed from thin resistive and dielectric films, is a promising circuit element for microminiature oscillator circuits. The differential equation for voltage or current along such a line is a second degree equation with variable coefficients and involves an imaginary term. An exact steady-state solution of this equation has been obtained previously in two special cases only. The paper outlines two methods of obtaining a number of simple patterns of non-uniformity for which the line equation is exactly solvable. Some corresponding solutions for the line voltage are also given.

show abstract

Optimization of thermal self-interaction in a moving medium in the case of elliptic beam scanning

Vdovin¹,

Sorokin²,

Davydov³

1984

Sov. J. Quantum Electron.

View full text Add to dashboard Cite

Thermal self-interaction of annular laser beams in a moving medium

Cited by 6 publications

References 3 publications

Effect of Thermal Blooming on the Higher-Order Mode Fiber Laser Array Propagation Through the Atmosphere

Effect of Thermal Blooming on the Higher-Order Mode Fiber Laser Array Propagation Through the Atmosphere

Numerical and experimental simulation of the thermal selfaction of laser beams over a path in a medium moving at a variable velocity

Optimization of thermal self-interaction in a moving medium in the case of elliptic beam scanning

Contact Info

Product

Resources

About