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
iOuu
|
|