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Article Dans Une Revue Applied optics Année : 2021

Beam-size effects on the measurement of sub-picosecond intrinsic laser induced damage threshold of dielectric oxide coatings

Marek Stehlík
  • Fonction : Auteur
Frank Wagner
  • Fonction : Auteur
Janis Zideluns
  • Fonction : Auteur
Julien Lumeau
Laurent Gallais

Résumé

Laser-induced damage experiments on HfO2 and Nb2O5 thin films were performed with 500 fs pulse duration at 1030 nm wavelength. Threshold fluences as a function of beam size have been determined for effective beam diameters ranging from 40 to 220 µm, in a single shot regime. The results suggest no beam-size effect related to material properties in the investigated range, but size effects related to the metrology. The results indicate the importance of appropriate focusing conditions and beam measurement to qualify the optics for use in lasers with large beam sizes.
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Dates et versions

hal-03466239 , version 1 (25-02-2022)

Identifiants

Citer

Marek Stehlík, Frank Wagner, Janis Zideluns, Fabien Lemarchand, Julien Lumeau, et al.. Beam-size effects on the measurement of sub-picosecond intrinsic laser induced damage threshold of dielectric oxide coatings. Applied optics, 2021, 60 (27), pp.8569-8578. ⟨10.1364/AO.433935⟩. ⟨hal-03466239⟩
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