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A new type of supercritical collapse for intense long-wavelength ultrashort laser pulses

Program in Applied Mathematics Brown Bag Seminar

A new type of supercritical collapse for intense long-wavelength ultrashort laser pulses
Series: Program in Applied Mathematics Brown Bag Seminar
Location: MATH 402
Presenter: Andrew Hofstrand, Program in Applied Mathematics, University of Arizona

The study of nonlinear light-matter interactions was born in the 1960s when the first powerful cw laser sources came online.  Soon after, researchers began developing intense pulsed laser sources with durations of only a few femtosecond (fs) (10^(-15) s) capable of delivering Terawatt and even Petawatt powers.  Recently interest has shifted from visible and near-infrared sources to long-wavelength-infrared (LWIR) fs-scale pulses.  In this talk we introduce a canonical description for such few-cycle pulses in the limit of weak dispersion and relatively strong nonlinear effects.  Our model predicts a new type of carrier-wave resolved supercritical collapse, leading to extreme spatiotemporal confinement of the pulse's electric field, and whose dynamics persist in physically-more-complete computational models.