Hsieh Chia-Lung, Pu Ye, Grange Rachel, Laporte Grégoire, Psaltis Demetri
School of Engineering, EPFL, Station 17, 1015 Lausanne, Switzerland.
Opt Express. 2010 Sep 27;18(20):20723-31. doi: 10.1364/OE.18.020723.
We demonstrate imaging through a turbid layer by using digital phase conjugation of the second harmonic field radiated from a beacon nanoparticle. We show that the phase-conjugated focus can be displaced from its initial position by illuminating the same region of the turbid layer with an angular offset. An image is obtained by scanning the phase-conjugated focus through the turbid layer in a region around the nanoparticle. We obtain a clear image of the target by measuring the light transmitted through it when scanning the focused beam.
我们通过使用从信标纳米粒子辐射出的二次谐波场的数字相位共轭，展示了透过浑浊层的成像。我们表明，通过以角偏移照射浑浊层的同一区域，相位共轭焦点可以从其初始位置移位。通过在纳米粒子周围的区域中扫描穿过浑浊层的相位共轭焦点来获得图像。当扫描聚焦光束时，通过测量透过目标的光，我们获得了目标的清晰图像。
