Array of femtosecond plasma channels in fused silica

作者：Kosareva O G^*; Nguyen T; Panov N A; Liu W; Saliminia A; Kandidov V P; Akozbek N; Scalora M; Vallee R; Chin S L

来源：Optics Communications, 2006, 267(2): 511-523.

DOI：10.1016/j.optcom.2006.06.087

• refractive index modification
• silica glass
• plasma channels
• periodic mesh
• femtosecond pulse

We have shown experimentally and confirmed by means of full dimensional (3D + 1) numerical simulations, the possibility to create an array of refractive index modification zones inside a fused silica sample using a 43 fs, 2 mJ, 800 nm laser pulse and a periodic mesh introduced in front of the sample. Robust filaments and the corresponding refractive index modification zones preserve their transverse positions for more than 10 Rayleigh lengths (similar to 500 pm). Numerical simulations prove that each mesh unit is an independent source of the background energy for a filament formed within this unit. The effect of the simultaneous formation of many extended periodically spaced filaments can be used to accelerate the fabrication of microoptics devices.

• 出版日期2006-11-15