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Comparison of Gaussian and Top-Hat Beam Profiles in LIDT Testing

Riede, Wolfgang and Jensen, Lars and Allenspacher, Paul (2007) Comparison of Gaussian and Top-Hat Beam Profiles in LIDT Testing. In: Annual Boulder Damage Symposium. International Society for Optical Engineering (SPIE). 39th Annual Boulder Damage Symposium, 2007-09-25, Boulder CO USA.

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The ISO 11254 standard for LIDT tests suggests two possible beam profiles for damage testing. In the case of the Gaussian beam an effective area on the basis of the 1/e² diameter is given, and for a top-hat profile the full diameter is incorporated. To match measurements from test benches working with Gaussian and top-hat laser beams, a comparative test campaign at varying beam diameters is of major interest for an evaluation of analogies or deviations. In order to obtain experimental LIDT, data adequate tests were performed in two testing institutions. An equal set of samples was tested with a Gaussian TEM0,0 as well as with a top-hat beam profile at different beam diameters. This contribution will present results of these investigations at the Nd:YAG wavelength and harmonics in the ns regime.

Item URL in elib:https://elib.dlr.de/51649/
Document Type:Conference or Workshop Item (Poster)
Title:Comparison of Gaussian and Top-Hat Beam Profiles in LIDT Testing
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:25 September 2007
Journal or Publication Title:Annual Boulder Damage Symposium
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Publisher:International Society for Optical Engineering (SPIE)
Series Name:Proceedings SPIE
Keywords:Laser damage, Gaussian beam, Flat top beam
Event Title:39th Annual Boulder Damage Symposium
Event Location:Boulder CO USA
Event Type:international Conference
Event Dates:2007-09-25
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology (old)
Location: Lampoldshausen , Stuttgart
Institutes and Institutions:Institute of Technical Physics
Deposited By: Riede, Wolfgang
Deposited On:15 Oct 2007
Last Modified:27 Apr 2009 14:26

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