Abstract
The diffraction-induced pulse splitting (DIPS) under the dynamical Bragg diffraction in the Laue geometry in linear 1D photonic crystals (PCs) was predicted theoretically [1] and than recently observed experimentally [2] for p-polarized laser pulses. In that case, the pulses are incident on the structure as is shown in Fig. 1 and propagate within a PC under the Bragg diffraction condition parallel to the layers. It was shown that a pulse inside a PC can be splitted into two pulses that correspond to the two eigenmodes of the electromagnetic field inside a PC, the so called Borrmann and anti-Borrmann optical modes. The first one is localized mostly inside the layers with smaller value of the refractive index, while the latter one – in those with larger refractive index. Consequently, the pulses of these modes propagate within a PC with different group velocities and thus a temporal splitting t12 of a short incident laser pulses can be observed (Fig. 1).
© 2013 IEEE
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