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arXiv 1603.06960physics.optics
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用纯相位空间光调制器产生空间变化的二维晶格结构

Optical generation of a spatially variant two-dimensional lattice structure by using a phase only spatial light modulator

Manish Kumar, Joby Joseph

摘要:

提出了一种利用光学干涉光刻技术生成空间变化晶格结构的简单方法。使用这种方法,可以独立地改变二维晶格的取向和周期。该方法由两个步骤组成,即:采用二维积分梯度计算的相应的相位掩模的数值合成和合成的相位掩模的实验实施,利用相位只有空间光调制器在光学4f傅里叶滤波装置。作为一个工作实例,我们提供了一个空间变化的正方形晶格结构,它有可能引导高斯光束通过一个90°弯曲的光子晶体自准直现象的实验制作。该方法是数字可重构的,是完全可扩展的,也可以扩展到其他类型的格。

英文摘要:

We propose a simple and straightforward method to generate a spatially variant lattice structures by optical interference lithography method. Using this method, it is possible to independently vary the orientation and period of the two-dimensional lattice. The method consists of two steps which are: numerical synthesis of corresponding phase mask by employing a two-dimensional integrated gradient calculations and experimental implementation of synthesized phase mask by making use of a phase only spatial light modulator in an optical 4f Fourier filtering setup. As a working example, we provide the experimental fabrication of a spatially variant square lattice structure which has the possibility to guide a Gaussian beam through a 90° bend by photonic crystal self-collimation phenomena. The method is digitally reconfigurable, is completely scalable and could be extended to other kind of lattices as well.

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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