Peschel U, Pertsch T, Lederer F
Opt Lett. 1998 Nov 1;23(21):1701-3. doi: 10.1364/ol.23.001701.
We show that optical Bloch oscillations can emerge in waveguide arrays with linearly varying propagation constants. The existence of localized modes (Wannier-Stark states) with equidistant wave-number spacing (Wannier-Stark ladder) that do not undergo diffraction is analytically proved. The evolution of arbitrary initial excitations is described, and potential applications are suggested.
我们表明，光学布洛赫振荡可以出现在具有线性变化传播常数的波导阵列中。通过分析证明了存在具有等距波数间距的局域模式（万尼尔 - 斯塔克态）（万尼尔 - 斯塔克阶梯），这些模式不会发生衍射。描述了任意初始激发的演化，并提出了潜在的应用。
