Nonlinear electromagnetic X waves.
Nonlinear optical media that are normally dispersive support a new type of localized (nondiffractive and nondispersive) wave packets that are X shaped in space and time and have slower than exponential decay. High-intensity X waves, unlike linear ones, can be formed spontaneously through a trigger mechanism of conical emission, thus playing an important role in experiments.
Conti
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C
Istituto Nazionale di Fisica della Materia-RM3, Via della Vasca Navale 84, 00146 Roma, Italy.
Trillo
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S
Di Trapani
P
P
Valiulis
G
G
Piskarskas
A
A
Jedrkiewicz
O
O
Trull
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J