| anubiszf |
2010-01-07 20:32 |
The spatial spectrum is obtained by using a lens to `lO(s%HC
do Fourier transform and the far-field spectrum is recorded nd ink$
by a CCD camera positioned in its focal plane. )KE [!ofD
First, we summarize our results of on-axis excitation of a )"Q*G/+2Ie
single 2D gap soliton in Fig. 1. Different from previous <A >)[u
experimental observations in which either the probe beam pd3,pQ
was launched off-axis to match the edge of the first BZ [6] CS 8jA\
or its input phase or spectrum was engineered [11], we n`ViTwd]MQ
demonstrate on-axis excitation of a 2D gap soliton without & $'z
a priori phase or spectral engineering. In fact, we show OtJ\T/q,
|
|
ok