Remote and rapid micromachining of broadband low-reflectivity black silicon surfaces by femtosecond laser filaments.

نویسندگان

  • Xuepeng Zhan
  • Huailiang Xu
  • Chunhao Li
  • Hongwei Zang
  • Chang Liu
  • Jihong Zhao
  • Hongbo Sun
چکیده

We report an approach for remote and rapid fabrication of a broadband low-reflectivity black silicon surface by ablating crystalline silicon with femtosecond laser filaments in air. Porous microstructures on the processed silicon surface are formed, resulting in a significantly enhanced light trapping efficiency in a broadband (UV-IR) spectral range. It is found that the air filament can significantly reduce the average number of adopted pulses in a normalized fabrication area and enables the processing remotely, which opens a way toward remote and rapid micromachining of optoelectronic materials by femtosecond laser filaments.

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عنوان ژورنال:
  • Optics letters

دوره 42 3  شماره 

صفحات  -

تاریخ انتشار 2017