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arXiv 1507.08601physics.optics
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非线性数字成像

Nonlinear digital imaging

Jen-Tang Lu, Alexandre S. Goy, Jason W. Fleischer

摘要:

非线性成像系统可以超越线性光学的限制,但迄今为止,它们都依赖于物理介质(例如晶体)来工作。这些材料都受到其物理特性的限制,例如频率选择性,环境敏感性,时间行为和固定的非线性响应。在这里,我们表明,电光空间光调制器(SLM)可以取代传统的非线性介质,提供的对象和调制器上的图案的形状之间的反馈。该反馈创建设计者照明,其将自适应光学的领域推广为包括对象相关图案。与物理介质不同,SLM响应可以提供任意数学函数,在宽带上高速工作,并且在高功率和单光子水平下同样工作良好。我们证明了该方法的实验相干和非相干光。

英文摘要:

Nonlinear imaging systems can surpass the limits of linear optics, but to date they have all relied on physical media (e.g. crystals) to work. These materials are all constrained by their physical properties, such as frequency selectivity, environmental sensitivity, time behavior, and fixed nonlinear response. Here, we show that electro-optic spatial light modulators (SLMs) can take the place of traditional nonlinear media, provided that there is a feedback between the shape of the object and the pattern on the modulator. This feedback creates a designer illumination that generalizes the field of adaptive optics to include object-dependent patterns. Unlike physical media, the SLM response can provide arbitrary mathematical functions, operate over broad bandwidths at high speeds, and work equally well at high power and single-photon levels. We demonstrate the method experimentally for both coherent and incoherent light.

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