Laser induced periodic surface structure formation in germanium above laser damage fluence by mid IR femtosecond laser irradiation

Kyle Kafka, Drake Austin, Jian Cheng, Simeon Trendafilov, Gennady Shvets, Hui Li, Allen Yi, Cosmin I. Blaga, L. F. Dimauro, Enam Chowdhury

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Laser induced periodic surface structures (LIPSS) were generated via interaction of multiple 90 femtosecond 1900-3600 nm mid IR laser pulses (3-10, 000) on single crystal Ge targets. For specific laser parameters, both low and high frequency LIPSS are found together, which are oriented perpendicular to each other. Study of polarization dependence of LIPSS revealed that orientation and symmetry of interaction could be controlled by rotating polarization of laser pulses. Low frequency LIPSS formation was consistent with surface plasmon coupling of laser pulses with excited Ge.

Original languageEnglish
Title of host publication46th Annual Laser Damage Symposium Proceedings - Laser-Induced Damage in Optical Materials
Subtitle of host publication2014
EditorsGregory J. Exarhos, Detlev Ristau, Joseph A. Menapace, M.J. Soileau, Vitaly E. Gruzdev
PublisherSPIE
ISBN (Electronic)9781628413007
DOIs
StatePublished - 2014
Externally publishedYes
Event46th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2014 - Boulder, United States
Duration: 14 Sep 201417 Sep 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9237
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference46th Annual Laser Damage Symposium - Laser-Induced Damage in Optical Materials: 2014
Country/TerritoryUnited States
CityBoulder
Period14/09/1417/09/14

Keywords

  • Femtosecond laser
  • Femtosecond laser
  • Germanium
  • HSFL
  • LIPSS
  • LSFL
  • Laser induced damage
  • Laser induced periodic surface structures
  • Mid IR
  • Multiple pulse damage
  • Surface plasmon polariton

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