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physics.optics2026
9.8-GW tabletop attosecond light source
Lihui Meng, Lu Xu, Xusheng Zhu +4
The generation of attosecond pulses has enabled real-time observation and manipulation of coherent electron dynamics, yet their low peak power has hindered the development of advan…
physics.optics2024
Bidirectional cascaded superfluorescent lasing in air enabled by resonant third harmonic photon exchange from nitrogen to argon
Zan Nie, Noa Nambu, Kenneth A. Marsh +10
Cavity-free lasing in atmospheric air has stimulated intense research towards fundamental understanding of underlying physical mechanisms. In this Letter, we identify a new mechani…