| anubiszf |
2010-01-07 20:32 |
The spatial spectrum is obtained by using a lens to .W2w/RayC
do Fourier transform and the far-field spectrum is recorded OPqhdqo
by a CCD camera positioned in its focal plane. RF4B ]Gqd
First, we summarize our results of on-axis excitation of a lU&2 K$`
single 2D gap soliton in Fig. 1. Different from previous _,UYbD\[J}
experimental observations in which either the probe beam %]tW2s"
was launched off-axis to match the edge of the first BZ [6] p<l+js(5|
or its input phase or spectrum was engineered [11], we ' @\[U0?@K
demonstrate on-axis excitation of a 2D gap soliton without )-}<}< oO
a priori phase or spectral engineering. In fact, we show M\IdQY-c
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