Dipartimento di Scienza e Alta Tecnologia, Università dell'Insubria, Via Valleggio 11, IT-22100 Como, Italy.
Phys Rev Lett. 2012 Jun 22;108(25):253901. doi: 10.1103/PhysRevLett.108.253901. Epub 2012 Jun 18.
Optical solitons or solitonlike states shed light to blueshifted frequencies through a resonant emission process. We predict a mechanism by which a second propagating mode is generated. This mode, called negative resonant radiation, originates from the coupling of the soliton mode to the negative-frequency branch of the dispersion relation. Measurements in both bulk media and photonic-crystal fibers confirm our predictions.
光学孤子或类孤子态通过共振发射过程将光散射到蓝移频率。我们预测了一种产生第二个传播模式的机制。这个模式,称为负共振辐射,源于孤子模式与色散关系的负频率分支的耦合。在体材料和光子晶体光纤中的测量证实了我们的预测。