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1972•Soviet Journal of Quantum ElectronicsRequires access

STEADY-STATE THERMAL SELF-FOCUSING OF LASER BEAMS

Anatolii Petrovich Sukhorukov, Serge Feld, A. M. Khachatryan, E. N. Shumilov

Open publisher page 2 citations

Abstract

Some aspects of the theory of thermal self-focusing of cw laser beams are considered. A geometrical-optics ray equation is derived for a nonlinear absorbing medium. This ray equation is used to construct the aberration pattern in thermal self-focusing. The structure of the focal region is also analyzed. A detailed discussion is given of the behavior of the field at the focus for a wide range of the values of the absorption in the medium and the input power. The stability of steady-state thermal self-focusing is investigated and it is shown that such self-focusing can be applied to real high-power beams without splitting them into separate filaments.

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What this paper is about

Some aspects of the theory of thermal self-focusing of cw laser beams are considered. A geometrical-optics ray equation is derived for a nonlinear absorbing medium. This ray equation is used to construct the aberration pattern in thermal self-focusing. The structure of the focal region is also analyzed. A detailed discussion is given of the behavior of the field at the focus for a wide range of the values of the absorption in the medium and the input power. The stability of steady-state thermal self-focusing is investigated and it is shown that such self-focusing can be applied to real high-power beams without splitting them into separate filaments.

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Available abstract

Some aspects of the theory of thermal self-focusing of cw laser beams are considered. A geometrical-optics ray equation is derived for a nonlinear absorbing medium. This ray equation is used to construct the aberration pattern in thermal self-focusing. The structure of the focal region is also analyzed. A detailed discussion is given of the behavior of the field at the focus for a wide range of the values of the absorption in the medium and the input power. The stability of steady-state thermal self-focusing is investigated and it is shown that such self-focusing can be applied to real high-power beams without splitting them into separate filaments.

Key concepts: Self-focusing, Thermal blooming, Optics, Laser, Thermal, Focus (optics), Steady state (chemistry), Power (physics)

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