Indexed by: Journal paper

Journal: Applied Physics Letters

Key Words: Laser beam machining,Excitons, Femtosecond lasers, Glass, Elementary particle interactions, Optical metrology, Surface collisions Leptons, Signal processing, Data acquisition

DOI number: 10.1063/1.4802820

Date of Publication: 2013-04-23

Abstract: There are natural limits to the spatial resolution and the deposited energy densities that can be achieved in femtosecond laser dielectric modification. These arise because of the threshold-like nature of nonlinear absorption. We use two-pulse experiments to show that both limits can be exceeded by taking advantage of absorption seeded by free electrons or self-trapped excitons, depending on the pulse separation.

Links to published journals: https://aip.scitation.org/doi/abs/10.1063/1.4802820