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arXiv 1809.07077physics.optics
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随机光学介质的非线性传输矩阵

Nonlinear transmission matrices of random optical media

A. Fleming, C. Conti, A. Di Falco

摘要:

具有定制光学特性的随机介质在成像、生物物理、能源、纳米医学、光谱学、密码学和电信等领域的应用正引起人们的极大兴趣。基于这类材料的器件的一个关键范例是传输矩阵,输入和输出信号之间的张量联系,它完全描述了它们的光学行为。传输矩阵具有特定的统计性质,因为存在无损信道,可以用来传输信息,并且由无序分布决定。在非线性材料中,这些通道可以被调制,并且传输矩阵可以相应地被调谐。在这里,我们报告的非线性传输矩阵的复杂材料的直接测量,利用散射二氧化硅气凝胶(SA)的强光热非线性。我们表明,由于非线性的失相效应是可控的和可逆的,打开道路的应用程序的基础上的非线性响应的随机介质。

英文摘要:

Random media with tailored optical properties are attracting burgeoning interest for applications in imaging, biophysics, energy, nanomedicine, spectroscopy, cryptography and telecommunications. A key paradigm for devices based on this class of materials is the transmission matrix, the tensorial link between the input and the output signals, that describes in full their optical behavior. The transmission matrix has specific statistical properties, as the existence of lossless channels, that can be used to transmit information, and are determined by the disorder distribution. In nonlinear materials, these channels may be modulated and the transmission matrix tuned accordingly. Here we report the direct measurement of the nonlinear transmission matrix of complex materials, exploiting the strong optothermal nonlinearity of scattering Silica Aerogel (SA). We show that the dephasing effects due to nonlinearity are both controllable and reversible, opening the road to applications based on the nonlinear response of random media.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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