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Array of femtosecond plasma channels in fused silica |
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| Authors: | OG Kosareva T Nguyen W Liu VP Kandidov M Scalora SL Chin |
| Institution: | a International Laser Center, Physics Department, M.V. Lomonosov Moscow State University, Moscow 119992, Russia b Centre d’Optique, Photonique et Laser (COPL) et Département de Physique, de Génie Physique et d’Optique,Université Laval, Québec, QC, Canada G1K 7P4 c Time Domain Corporation, Cummings Research Park, 7057 Old Madison Pike, Huntsville, AL 35806, USA d Charles M. Bowden Research Center, AMSRD-AMR-WS-ST, RDECOM, Redstone Arsenal, AL 35898-5000, USA |
| Abstract: | 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 (∼500 μm). 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. |
| Keywords: | 42 65 Jx 42 79 Gn |
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