Spatiotemporal focusing in opaque scattering media by wave front shaping with nonlinear feedback
Spatiotemporal focusing in opaque scattering media by wave front shaping with nonlinear feedback
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DOI：
10.1364/oe.20.029237
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发表时间：
2012-12-31
期刊：
影响因子：
3.8
通讯作者：
Lagendijk, Ad
中科院分区：
文献类型：
--
作者：
Aulbach, Jochen;Gjonaj, Bergin;Lagendijk, Ad
我们实验证明时空聚焦的光嵌入在一个强散射介质中的单个纳米晶体。我们的方法是基于短脉冲的空间波前整形，使用目标纳米晶体内的二次谐波产生作为反馈信号。我们成功地开发了一个模型，实现脉冲持续时间以及所观察到的反馈信号的增强。该方法使令人兴奋的机会，在存在强散射的光传播的研究，以及在复杂介质中的成像，微和纳米操纵，相干控制和光谱学的应用。(C)2012美国光学学会
We experimentally demonstrate spatiotemporal focusing of light on single nanocrystals embedded inside a strongly scattering medium. Our approach is based on spatial wave front shaping of short pulses, using second harmonic generation inside the target nanocrystals as the feedback signal. We successfully develop a model both for the achieved pulse duration as well as the observed enhancement of the feedback signal. The approach enables exciting opportunities for studies of light propagation in the presence of strong scattering as well as for applications in imaging, micro- and nanomanipulation, coherent control and spectroscopy in complex media. (C) 2012 Optical Society of America