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Ultrasolitons: multistability and subcritical power threshold from higher-order Kerr terms
Ultrasolitons multistability and subcritical power threshold higher-order Kerr terms Pattern Formation and Solitons
2012/4/27
We show that an optical system involving competing higher-order Kerr nonlinearities can support the existence of ultrasolitons, namely extremely localized modes that only appear above a certain thresh...
Higher-order Kerr terms allow ionization-free filamentation in gases
Higher-order Kerr ionization-free filamentation gases
2010/11/16
We show that higher-order nonlinear indices ($n_4$, $n_6$, $n_8$, $n_{10}$) provide the main defocusing contribution to self-channeling of ultrashort laser pulses in air and Argon at 800 nm, in contr...