Self-organized pattern formation in laser-induced multiphoton ionization (original) (raw)

Formation of nanogratings in a transparent material with tunable ionization property by femtosecond laser irradiation

Optics express, 2013

Irradiation inside some transparent materials such as fused silica can induce nanograting structures at the focal area. Here, we investigate experimentally how the nanograting formation can be influenced by tuning the ionization property of the transparent material, which is achieved by irradiation inside a porous glass immersed in water doped with NaCl at variable concentrations. Our results show that the doping of NaCl not only reduces the threshold fluence of optical breakdown, but also leads to nanograting structures with shorter periods. These effects may be attributed to the enhanced photoionization in water doped with NaCl.

Laser Simulation of SEE Due to Localized Ionization in Dielectric Structures

IEEE Transactions on Nuclear Science, 2009

This paper reports an investigation of the use of two-photon absorption (TPA) of blue laser pulses and production of ultraviolet pulses through second harmonic generation (SHG) to simulate single event effects involving ionization and charge trapping in dielectrics.

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