Chen Feng, Stepić Milutin, Rüter Christian, Runde Daniel, Kip Detlef, Shandarov Vladimir, Manela Ofer, Segev Mordechai
Opt Express. 2005 May 30;13(11):4314-24. doi: 10.1364/opex.13.004314.
We investigate, experimentally and theoretically, light propagation in one-dimensional waveguide arrays exhibiting a saturable self-defocusing nonlinearity. We demonstrate low-intensity "discrete diffraction", and the high-intensity formation of spatial gap solitons arising from the first band of the transmission spectrum. The waveguide arrays are fabricated by titanium in-diffusion in a photorefractive copper-doped lithium niobate crystal, and the optical nonlinearity arises from the bulk photovoltaic effect.
我们通过实验和理论研究了在具有可饱和自散焦非线性的一维波导阵列中的光传播。我们展示了低强度的“离散衍射”，以及由传输谱的第一能带产生的高强度空间带隙孤子的形成。波导阵列是通过在光折变掺铜铌酸锂晶体中进行钛扩散制造的，光学非线性源于体光伏效应。
