| anubiszf |
2010-01-07 20:32 |
The spatial spectrum is obtained by using a lens to |o=\9 :wV
do Fourier transform and the far-field spectrum is recorded BSu)O~s
by a CCD camera positioned in its focal plane. @ Rb1)$~#
First, we summarize our results of on-axis excitation of a TX
[%s@C
single 2D gap soliton in Fig. 1. Different from previous | m 5;M$M)
experimental observations in which either the probe beam )(!Z90@
was launched off-axis to match the edge of the first BZ [6] .f<VmUca
or its input phase or spectrum was engineered [11], we rWfurB5f
demonstrate on-axis excitation of a 2D gap soliton without 'kg]|"M
a priori phase or spectral engineering. In fact, we show :9
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