Abstract
Freeman resonances are an extremely utile phenomenon of ultrafast laser physics [1]. They arise when a Ry-dberg state is AC-Stark shifted into multiphoton resonance with the atomic ground state. Here, we theoretically demonstrate that Freeman resonances may strongly impact the optical propagation within femtosecond filaments, revealing the requirement for a synthesis of filamentation nonlinear optics and ultrafast strong field phenomena.
© 2015 IEEE
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