Self-limited underdense microplasmas in bulk silicon induced by ultrashort laser pulses
Two-photon ionization by focused femtosecond laser pulses initiates the development of micrometer-scale plasmas in the bulk of silicon. Using pump-and-probe transmission microscopy with infrared light, we investigate the space-time characteristics of these plasmas for laser intensities up to 10¹²W/cm². The measurements reveal a self-limitation of the excitation at a maximum free-carrier density of ffi1019 cm3, which is more than one order of magnitude below the threshold for permanent...[Show more]
|Collections||ANU Research Publications|
|Source:||Applied Physics Letters|
|Mouskeftaras and Rode et al Self-limited Underdense MIcroplasmas 2014.pdf||1.22 MB||Adobe PDF|
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