| anubiszf |
2010-01-07 20:32 |
The spatial spectrum is obtained by using a lens to , *8}TIS(s
do Fourier transform and the far-field spectrum is recorded M?x/C2|
by a CCD camera positioned in its focal plane. i[@*b/A
First, we summarize our results of on-axis excitation of a i}N'W V`!
single 2D gap soliton in Fig. 1. Different from previous y} AkF2:
experimental observations in which either the probe beam ]$!-%pNv
was launched off-axis to match the edge of the first BZ [6] ] 7_ f'M1F
or its input phase or spectrum was engineered [11], we z%(m:/N70
demonstrate on-axis excitation of a 2D gap soliton without ) FGm5-K@
a priori phase or spectral engineering. In fact, we show PYPs64kNC]
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