Femtosecond laser-induced periodic structure adjustments based on electron dynamics control: From subwavelength ripples to double-grating structures

Xuesong Shi, Lan Jiang, Xin Li, Sumei Wang, Yanping Yuan, Yongfeng Lu

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Abstract

This study proposes a method for adjusting subwavelength ripple periods and the corresponding double-grating structures formed on fused silica by designing femtosecond laser pulse trains based on localized transient electron density control. Four near-constant period ranges of 190-490 nm of ripples perpendicular to the polarization are obtained by designing pulse trains to excite and modulate the surface plasmon waves. In the period range of 350-490 nm, the double-grating structure is fabricated in one step, which is probably attributable to the grating-assisted enhanced energy deposition and subsequent thermal effects.

Original languageEnglish (US)
Pages (from-to)3743-3746
Number of pages4
JournalOptics Letters
Volume38
Issue number19
DOIs
Publication statusPublished - Oct 1 2013

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ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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