Laser-Matter Interactions and Applications

When an intense laser pulse strikes matter, it can drive electrons through violent, controlled motions on timescales measured in attoseconds — billionths of a billionth of a second — making it possible to photograph chemical bonds forming and breaking in real time. Researchers use phenomena such as high-harmonic generation, in which atoms re-emit laser light at much shorter wavelengths including soft X-rays, to probe electron dynamics and molecular structure with unprecedented temporal and spatial resolution. Active efforts focus on extending these techniques to more complex molecules and condensed-matter systems, where the interplay between electronic and nuclear motion remains difficult to disentangle. A central open question is how precisely quantum coherence can be exploited to steer chemical reactions, a goal that demands both better light sources and more refined theoretical models of nonlinear, many-body dynamics.

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Keywords

Attosecond PhysicsHigh-Harmonic GenerationUltrafast Laser PulsesNonlinear OpticsMolecular DynamicsQuantum Control