| anubiszf |
2010-01-07 20:32 |
The spatial spectrum is obtained by using a lens to U F<uU-C"
do Fourier transform and the far-field spectrum is recorded l#H#+*F
by a CCD camera positioned in its focal plane. 5c^Z/
Jl$c
First, we summarize our results of on-axis excitation of a $;/}?QY(
single 2D gap soliton in Fig. 1. Different from previous .$%Soyr?,
experimental observations in which either the probe beam " 9^j.
was launched off-axis to match the edge of the first BZ [6] fD07VBS yl
or its input phase or spectrum was engineered [11], we `> ?ra-
demonstrate on-axis excitation of a 2D gap soliton without _:-ha?W$;y
a priori phase or spectral engineering. In fact, we show 'eJ+JM<0%
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