Fabrication of antireflection microstructure on GaSe crystal surface by single-pulse femtosecond laser ablation

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Abstract

GaSe crystals that are promising as nonlinear optical converters in the mid- and far-infrared ranges are characterized by high Fresnel losses leading to transmittance per surface at the level of 77%. In this study, antireflection microstructures (ARMs) were fabricated on the surface of the GaSe single crystal by single-pulse femtosecond laser ablation. This method makes it possible to increase the transmission up to up to 92%.

Original languageEnglish
Title of host publication52nd Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials 2019
EditorsChristopher Wren Carr, Vitaly E. Gruzdev, Detlev Ristau, Carmen S. Menoni
PublisherSPIE
ISBN (Electronic)9781510638334
DOIs
Publication statusPublished - 2020
Event52nd Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials 2019 - Virtual, Online
Duration: 15 Sep 202018 Sep 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11514
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference52nd Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials 2019
CityVirtual, Online
Period15.09.202018.09.2020

Keywords

  • Antireflection coatings
  • Antireflection microstructures
  • GaSe crystal
  • Laser induced damage threshold
  • Mid-IR laser
  • Mid-IR optics
  • Optical parametric converter

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