Ultrafast thermal excitation behaviors of Au films irradiated by polarization-shaped femtosecond laser

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Abstract

We theoretically investigated the ultrafast thermal excitation behaviors on Au films surface irradiated by polarization-shaped femtosecond laser. The spatio-temporal dynamics of temperature evolution in Au film with polarization-shaped femtosecond laser excitation are obtained based on Finite Element Method (FEM). It is revealed that the phonon temperature fields can be flexibly adjusted by optimizing the polarization state combinations of polarization-shaped double femtosecond laser pulses. The results are attributed to pulse synthetic effect, which closely depends on the polarization state combinations of double femtosecond laser pulses. The study provides the basic for understanding of the thermal excitation dynamics for optimizing laser micro and nano-fabrications via tailoring the polarization state of temporally shaped femtosecond laser..

Original languageEnglish
Title of host publicationInternational Conference on Photonics and Optical Engineering, icPOE 2014
EditorsWeiguo Liu, Anand Asundi, Chunmin Zhang, Ailing Tian
PublisherSPIE
ISBN (Electronic)9781628415650
DOIs
StatePublished - 2015
EventInternational Conference on Photonics and Optical Engineering, icPOE 2014 - Xi'an, China
Duration: 13 Oct 201415 Oct 2014

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9449
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceInternational Conference on Photonics and Optical Engineering, icPOE 2014
Country/TerritoryChina
CityXi'an
Period13/10/1415/10/14

Keywords

  • incident angle
  • polarization combination
  • polarization-shaped femtosecond laser
  • ultrafast thermal excitation behaviors

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