Ethanol-assisted ablation of silicon and germanium by temporally shaped femtosecond pulses

Guangming Zhang, Xin Li, Lan Jiang, Xuesong Shi, Kaihu Zhang, Qiang Cao, Yongfeng Lu

Research output: Contribution to journalArticlepeer-review


A surprising phenomenon can be discovered by using femtosecond double-pulse ablation of silicon and germanium in ethanol. The ablation areas present an oscillation increase phenomenon when the pulse delay increases from 200 fs to 1 ps in the fluence range of 0.5-0.6 J/cm2. In contrast, the ablation areas exhibit an oscillation decrease phenomenon as the pulse delay increases when the laser fluence F < 0.5 J/cm2, which is consistent with the results of the experiment in air. It is considered that the adjustment of the photon-electron coupling efficiency by pulse train technology plays an important role in the ablation process.

Original languageEnglish (US)
Article number041402
JournalChinese Optics Letters
Issue number4
StatePublished - Apr 10 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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