The impact of intensity fluctuations on laser damage

2021 ◽  
Author(s):  
Douglas W. Broege ◽  
Stavros G. Demos ◽  
Christophe Dorrer ◽  
Kyle R. P. Kafka ◽  
Amy Rigatti ◽  
...  
Keyword(s):  
Laser Damage ◽  
Intensity Fluctuations ◽  
The Impact

scholarly journals The impact of H i in galaxies on 21-cm intensity fluctuations during the reionization epoch

2009 ◽  
Vol 395 (1) ◽  
pp. 311-318 ◽  
Author(s):  
J. S. B. Wyithe ◽  
L. Warszawski ◽  
P. M. Geil ◽  
S. Peng Oh
Keyword(s):  
Intensity Fluctuations ◽  
The Impact

Influence of intensity fluctuations on laser damage in optical materials

1995 ◽  
Author(s):  
M. F. Koldunov ◽  
Alexander A. Manenkov ◽  
I. L. Pocotilo
Keyword(s):  
Optical Materials ◽  
Laser Damage ◽  
Intensity Fluctuations

The impact of laser damage on the lifetime of optical components in fusion lasers

2004 ◽  
Author(s):  
Herve Bercegol ◽  
Philippe R. Bouchut ◽  
Laurent Lamaignere ◽  
Bruno Le Garrec ◽  
Gerard Raze
Keyword(s):  
Laser Damage ◽  
Optical Components ◽  
The Impact

scholarly journals Impact of the Polishing Suspension Concentration on Laser Damage of Classically Manufactured and Plasma Post-Processed Zinc Crown Glass Surfaces

2018 ◽  
Vol 8 (9) ◽  
pp. 1556 ◽  
Author(s):  
Christoph Gerhard ◽  
Marco Stappenbeck
Keyword(s):  
Damage Threshold ◽  
Surface Contamination ◽  
Laser Damage ◽  
Surface Finishing ◽  
Process Conditions ◽  
Post Processing ◽  
Suspension Concentration ◽  
Laser Induced Damage ◽  
Glass Surfaces ◽  
The Impact

The laser-induced damage threshold of optics is an issue of essential importance in high-power laser applications. However, the complex and partially interacting mechanisms as well as the underlying reasons for laser damage of glass surfaces are not yet fully understood. The aim of the present work is to contribute to a better understanding of such damage mechanisms by providing original results on the impact of classical glass surface machining on the laser-induced damage threshold. For this purpose, glass samples were prepared with well-defined process conditions in terms of the used lapping and polishing agents and suspensions. Further, the samples were post-processed by atmospheric pressure plasma for precision cleaning. The laser-induced damage threshold and surface contamination by residues from the manufacturing process were determined before and after plasma post-processing. It is shown that the polishing suspension concentration has a certain impact on the laser-induced damage threshold and surface contamination by residues from used working materials. The highest damage threshold of 15.2 J/cm² is found for the lowest surface contamination by carbon which occurs in the case of the highest polishing suspension concentration. After plasma treatment for merely 60 s, this value was increased to 20.3 J/cm² due to the removal of surface-adherent carbon. The results thus imply that the laser-induced damage threshold can notably be increased by first choosing appropriate process parameters during classical manufacturing and second plasma post-processing for surface finishing.

Formation of Lunar Craters and Bright Rays as a Result of Meteorite Impacts

1962 ◽  
Vol 14 ◽  
pp. 415-418
Author(s):  
K. P. Stanyukovich ◽  
V. A. Bronshten
Keyword(s):  
Explosive Charge ◽  
The Moon ◽  
Meteorite Impacts ◽  
The Earth ◽  
Lunar Craters ◽  
The Impact

The phenomena accompanying the impact of large meteorites on the surface of the Moon or of the Earth can be examined on the basis of the theory of explosive phenomena if we assume that, instead of an exploding meteorite moving inside the rock, we have an explosive charge (equivalent in energy), situated at a certain distance under the surface.

The Geosciences Applied to Lunar Exploration

1962 ◽  
Vol 14 ◽  
pp. 169-257 ◽  
Author(s):  
J. Green
Keyword(s):  
Lunar Surface ◽  
Probable Mechanism ◽  
Point Of View ◽  
Lunar Exploration ◽  
Geological Model ◽  
Apply Geophysics ◽  
Surface Features ◽  
The Impact

The term geo-sciences has been used here to include the disciplines geology, geophysics and geochemistry. However, in order to apply geophysics and geochemistry effectively one must begin with a geological model. Therefore, the science of geology should be used as the basis for lunar exploration. From an astronomical point of view, a lunar terrain heavily impacted with meteors appears the more reasonable; although from a geological standpoint, volcanism seems the more probable mechanism. A surface liberally marked with volcanic features has been advocated by such geologists as Bülow, Dana, Suess, von Wolff, Shaler, Spurr, and Kuno. In this paper, both the impact and volcanic hypotheses are considered in the application of the geo-sciences to manned lunar exploration. However, more emphasis is placed on the volcanic, or more correctly the defluidization, hypothesis to account for lunar surface features.

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