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Damage threshold investigations of high-power laser optics under atmospheric and vacuum conditions

Riede, Wolfgang und Jensen, Lars und Jupe, Marco (2006) Damage threshold investigations of high-power laser optics under atmospheric and vacuum conditions. In: Boulder Damage Symposium 2006, 38. SPIE. Boulder Damage Symposium XXXVIII, 2006-09-26, Boulder, CO (USA).

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Kurzfassung

In many cases, optical coatings are the limiting factor for the operational reliability of measurement systems and other technical devices based on laser irradiation. Especially in space applications, the reliability of an optical system is of existential importance. In this context, the behavior of the laser induced damage threshold (LIDT) in vacuum and in atmospheric pressure is of major interest. Initial experiments have shown a loss of performance of coatings that were exposed to vacuum conditions. On the one hand the LIDT at the fundamental wavelength of the Nd:YAG laser (1.064 µm) was determined, and on the other hand damage threshold investigations at the third harmonic of 355nm were performed on equivalent coatings. Compared to normal atmospheric conditions, significantly different spectral characteristics were observed for dielectric coatings, which were produced by various coating processes (electron beam evaporation, ion assisted deposition (IAD) and ion beam sputtering (IBS)), under vacuum. In the present paper the damage mechanisms in the ns range are investigated against the background of the experimental results attained for the different environments.

Dokumentart:Konferenzbeitrag (Poster)
Titel:Damage threshold investigations of high-power laser optics under atmospheric and vacuum conditions
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Riede, WolfgangNICHT SPEZIFIZIERT
Jensen, LarsLaser Zentrum Hannover
Jupe, MarcoLaser Zentrum Hannover
Datum:2006
Erschienen in:Boulder Damage Symposium 2006
Referierte Publikation:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Band:38
Herausgeber:
HerausgeberInstitution und/oder E-Mail-Adresse der Herausgeber
SPIE, NICHT SPEZIFIZIERT
Verlag:SPIE
Name der Reihe:Boulder Damage Symposium
Status:akzeptierter Beitrag
Stichwörter:coating processes, air-vacuum effect, ion assisted deposition, ion beam sputtering
Veranstaltungstitel:Boulder Damage Symposium XXXVIII
Veranstaltungsort:Boulder, CO (USA)
Veranstaltungsart:internationale Konferenz
Veranstaltungsdatum:2006-09-26
HGF - Forschungsbereich:Verkehr und Weltraum (alt)
HGF - Programm:Luftfahrt
HGF - Programmthema:Starrflügler
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Starrflüglerforschung
DLR - Teilgebiet (Projekt, Vorhaben):L - Laserforschung und -technologie
Standort: Stuttgart
Institute & Einrichtungen:Institut für Technische Physik
Hinterlegt von: Wolfgang Riede
Hinterlegt am:12 Okt 2006
Letzte Änderung:27 Apr 2009 13:07

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