National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China.
Phys Rev Lett. 2010 May 7;104(18):183901. doi: 10.1103/PhysRevLett.104.183901.
We propose and experimentally demonstrate the nonlinear Talbot effect from nonlinear photonic crystals. The nonlinear Talbot effect results from self-imaging of the generated periodic intensity pattern at the output surface of the crystal. To illustrate the effect, we experimentally observed second-harmonic Talbot self-imaging from 1D and 2D periodically poled LiTaO(3) crystals. Both integer and fractional nonlinear Talbot effects were investigated. The observation not only conceptually extends the conventional Talbot effect, but also opens the door for a variety of new applications in imaging technologies.
我们提出并实验演示了非线性光子晶体中的非线性塔尔博特效应。非线性塔尔博特效应源于在晶体输出表面上生成的周期性强度图案的自成像。为了说明该效应，我们实验观察到了来自一维和二维周期性极化 LiTaO3 晶体的二次谐波塔尔博特自成像。研究了整数和分数阶非线性塔尔博特效应。该观察不仅在概念上扩展了传统的塔尔博特效应，而且为成像技术的各种新应用开辟了道路。
