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Avalanche breakdown and the probabilistic nature of laser failure

Journal Article:

Abstract

A study was made of the probabilistic aspects of the development of an electron avalanche arising under the influence of a powerful laser beam in a solid transparent dielectric. The distribution function of time and relative fluctuation of the number of electrons was found. The width of the probability function of failure was determined as a function of intensity. The relative dispersion of time of beginning of breakdown can also be determined. Its numerical value under identical conditions is +-7%. These results are similar to the experimentally defined dispersion from an earlier work. The data produced also show that, in spite of the clearly probabilistic nature of the development of an avalanche, the slight width of the distribution causes the use of the threshold criterion for rupture of transparent dielectrics by laser radiation to be practically correct. The dependence of I/sub 0/ on pulse length agrees with experimental data, whereas I/sub 0/ (V) is significantly weaker than the actually observed value. This disagreement can be explained by various imperfections in the structure of the crystals and by their contamination, the frequency of appearance of which, in the focal volume, is proportional to its size and which were not considered in  More>>
Publication Date:
Jan 01, 1976
Product Type:
Journal Article
Reference Number:
EDB-77-044669
Resource Relation:
Journal Name: Opt.-Mekh. Prom-st.; (USSR); Journal Volume: 6
Subject:
42 ENGINEERING; LASERS; FAILURES; DIELECTRIC MATERIALS; DISTRIBUTION FUNCTIONS; PROBABILITY; 420300* - Engineering- Lasers- (-1989)
OSTI ID:
7128195
Country of Origin:
USSR
Language:
Russian
Other Identifying Numbers:
Journal ID: CODEN: OPMPA
Submitting Site:
HEDB
Size:
Pages: 18-20
Announcement Date:

Journal Article:

Citation Formats

Mitropol'skii, M M, Khote'enkov, V A, and Khodakov, G S. Avalanche breakdown and the probabilistic nature of laser failure. USSR: N. p., 1976. Web.
Mitropol'skii, M M, Khote'enkov, V A, & Khodakov, G S. Avalanche breakdown and the probabilistic nature of laser failure. USSR.
Mitropol'skii, M M, Khote'enkov, V A, and Khodakov, G S. 1976. "Avalanche breakdown and the probabilistic nature of laser failure." USSR.
@misc{etde_7128195,
title = {Avalanche breakdown and the probabilistic nature of laser failure}
author = {Mitropol'skii, M M, Khote'enkov, V A, and Khodakov, G S}
abstractNote = {A study was made of the probabilistic aspects of the development of an electron avalanche arising under the influence of a powerful laser beam in a solid transparent dielectric. The distribution function of time and relative fluctuation of the number of electrons was found. The width of the probability function of failure was determined as a function of intensity. The relative dispersion of time of beginning of breakdown can also be determined. Its numerical value under identical conditions is +-7%. These results are similar to the experimentally defined dispersion from an earlier work. The data produced also show that, in spite of the clearly probabilistic nature of the development of an avalanche, the slight width of the distribution causes the use of the threshold criterion for rupture of transparent dielectrics by laser radiation to be practically correct. The dependence of I/sub 0/ on pulse length agrees with experimental data, whereas I/sub 0/ (V) is significantly weaker than the actually observed value. This disagreement can be explained by various imperfections in the structure of the crystals and by their contamination, the frequency of appearance of which, in the focal volume, is proportional to its size and which were not considered in the theoretical statements developed here.}
journal = {Opt.-Mekh. Prom-st.; (USSR)}
volume = {6}
journal type = {AC}
place = {USSR}
year = {1976}
month = {Jan}
}