Formation mechanisms of sub-wavelength ripples during femtosecond laser pulse train processing of dielectrics

Yanping Yuan, Lan Jiang, Xin Li, Cong Wang, Hai Xiao, Yongfeng Lu, Hailung Tsai

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

A new model is proposed to investigate femtosecond laser pulse train processing of dielectrics by including the laser wave properties in the photon particle properties based plasma model. In the case studies, the pulse duration is 50fs and the pulse delays are 0, 25, 50 and 75fs. Both the laser waveparticle duality and transient localized changes of material properties are considered in the proposed model, and the formation mechanism of sub-wavelength ripples is revealed. This study shows that the interference between surface plasmons and laser field plays a key role in the formation of sub-wavelength ripples for which the excitation of surface plasmons is necessary. The predicted period of sub-wavelength ripples is in agreement with the experiments.

Original languageEnglish (US)
Article number175301
JournalJournal of Physics D: Applied Physics
Volume45
Issue number17
DOIs
StatePublished - May 2 2012

Fingerprint

Ultrashort pulses
ripples
Plasmons
Wavelength
Lasers
Processing
pulses
plasmons
wavelengths
lasers
Materials properties
Photons
Plasmas
pulse duration
interference
photons
Experiments
excitation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

Cite this

Formation mechanisms of sub-wavelength ripples during femtosecond laser pulse train processing of dielectrics. / Yuan, Yanping; Jiang, Lan; Li, Xin; Wang, Cong; Xiao, Hai; Lu, Yongfeng; Tsai, Hailung.

In: Journal of Physics D: Applied Physics, Vol. 45, No. 17, 175301, 02.05.2012.

Research output: Contribution to journalArticle

Yuan, Yanping ; Jiang, Lan ; Li, Xin ; Wang, Cong ; Xiao, Hai ; Lu, Yongfeng ; Tsai, Hailung. / Formation mechanisms of sub-wavelength ripples during femtosecond laser pulse train processing of dielectrics. In: Journal of Physics D: Applied Physics. 2012 ; Vol. 45, No. 17.
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