Propagation limits for a slow wave of optical breakdown in a fiber light guide

Gorbachenko, Vladimir; Dovzhenko, A. Yu.; Мержанов, А. Г.; Rumanov, É. N.; Фортов, В. Е.; Yachmeneva, O. E.

doi:10.1134/s1028335810080045

Cited by 4 publications

(1 citation statement)

References 4 publications

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“…During combustion, the displacement of the absorption front occurs with a thermal wave, during detonation -with a shock wave. The application of the term and the theory of combustion to optical combustion was shown in [7].…”

Section: Resultsmentioning

confidence: 99%

Destruction of Silica Fiber Materials under Shock Wave and Radiation Loadings

Efremov¹,

Уткин²

2018

AM&T

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The disturbance of the light conductivity in optical fiber transporting intense laser radiation leads to the occurrence of brightly illuminated laser plasma region. Plasma begins to move towards radiation, irreversibly damaging the optical fiber. Depending on the intensity of the laser energy, different rates of propagation of damage along the optical fibers towards the radiation are possible. This is either "combustion" of optical fibers, or "optical detonation". Both of these processes -"combustion" and "optical detonation" of optical fibers -destroy the light conductivity of silica fibers along the entire length. The rate of propagation of "combustion" depends on the energy density and is several meters per second. The detonation-like mode of destruction extends with velocity of several kilometers per second. Shock-wave data of silica fiber materials are necessary for modeling of the of such destruction process. In this paper the experimental study of propagation of the shock wave front in the materials of the optical fibers core in explosive experiments was carried out for the first time. For study of the detonation-like mode of a laser discharge propagation, experimental fibers were produced by the Fiber Optics Research Center of the Russian Academy of Sciences (FORC RAS) and an available industrial communication fiber (SMF-28e single-mode fiber from Corning). In the shock wave experiment, a two-wave mode of the propagation of the shock wave is confirmed. Anomalous compressibility behind the front of the shock wave was found in the materials of the optical fiber. The decrease in the sound velocity was about one km/s.

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Section: Resultsmentioning

confidence: 99%

Destruction of Silica Fiber Materials under Shock Wave and Radiation Loadings

Efremov¹,

Уткин²

2018

AM&T

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Silica Glass Optical Fiber and Fiber Fuse

Todoroki¹

2014

NIMS Monographs

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Hydrodynamic processes in fused quartz under the action of laser radiation

Efremov

Киверин

Yakovenko

2019

J. Phys.: Conf. Ser.

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The paper analyzes numerically the hydrodynamic processes developing inside the fused quartz under the action of intense laser impulses. Depending on laser intensity two basic regimes are obtained and described in details. At low intensities, the slow regime driven by the heat transfer is observed. Herewith, the fracture took place in the heated region before the phase transition. At higher intensities, the high-speed propagation regime is established characterized by the fracture events exactly at the interfacial boundary between the hot plasma and condensed phase. The propagation of absorption wave coupled with the fracture wave is limited by the value of sound speed in the hot plasma, which determines the expansion of plasma into the spallation region ahead of the absorption front. The proposed model of the process agrees well with the recent experimental data, in particular with the characteristic velocity scales.

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Propagation limits for a slow wave of optical breakdown in a fiber light guide

Cited by 4 publications

References 4 publications

Destruction of Silica Fiber Materials under Shock Wave and Radiation Loadings

Destruction of Silica Fiber Materials under Shock Wave and Radiation Loadings

Silica Glass Optical Fiber and Fiber Fuse

Hydrodynamic processes in fused quartz under the action of laser radiation

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