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Spontaneous crystallization and filamentation of solitons in dipolar condensates
Spontaneous crystallization solitons dipolar condensates
2011/8/17
Abstract: Inter-site interactions play a crucial role in polar gases in optical lattices even in the absence of hopping. We show that due to these long-range interactions a destabilized stack of quasi...
Robustness of the filamentation instability as shock mediator in arbitrarily oriented magnetic field
Robustness of the filamentation arbitrarily oriented magnetic field
2011/9/14
The filamentation instability (sometimes also referred to as “Weibel”) is a key process in many astrophysical scenario. In the Fireball model for Gamma Ray Bursts, this instability is believed to medi...
On negative higher-order Kerr effect and filamentation
higher-order Kerr effect filamentation
2010/11/12
As a contribution to the ongoing controversy about the role of higher-order Kerr effect (HOKE) in laser filamentation, we first provide thorough details about the protocol that has been employed to i...
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...
Spectral dependence of purely-Kerr driven filamentation in air and argon
Spectral dependence purely-Kerr driven filamentation argon
2010/11/16
Based on numerical simulations, we show that higher-order nonlinear indices (up to $n_8$ and $n_{10}$, respectively) of air and argon have a dominant contribution to both focusing and defocusing in t...
Filamentation of Light Emission in an Infrared-Visible Image Converter with a Semiconductor Photodetector
Light Emission Infrared-Visible Image Semiconductor Photodetector
2010/4/13
This work studies the light emission patterns associated with the spatial modulation of the transversal distribution of the current density in a converter cell with a GaAs semiconductor cathode. Such ...