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We review our recent results applying the stable nonlinear propagation of nondiffracting Bessel beams to femtosecond laser ablation in dielectric materials. We describe our spatial light modulator setup that allows for flexible and reconfigurable beam profile synthesis, we interpret the physics in terms of the formation of a steady plasma channel, and we present results of both multishot and single...
During nanopatterning of material surfaces by ultrashort laser pulses, the nano-damage depends critically on the laser fluence compared to the fluence threshold. The positioning of the sample surface with respect to the focal point is a strongly demanding factor when patterning large surfaces. We demonstrate the application of nondiffracting Bessel beams to reproducible nanometric-scale feature femtosecond...
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