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首页> 外文会议>Conference on High-Resolution Wavefront Control: Methods, Devices, and Applications IV, Jul 8-9, 2002, Seattle, Washington, USA >Diffraction efficiency of thin film holographic beam steering devices
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Diffraction efficiency of thin film holographic beam steering devices

机译：薄膜全息光束转向装置的衍射效率

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摘要

Dynamic holography has been demonstrated as a method for correcting aberrations in space deployable optics, and can also be used to achieve high-resolution beam steering in the same environment. In this paper we consider some of the factors affecting the efficiency of these devices. Specifically, the effect on the efficiency of a highly collimated beam from the number of discrete phase steps per period is considered for a blazed thin film beam steering grating. The effect of the number of discrete phase steps per period on steering resolution is also considered. We also present some results of Finite-Difference Time-Domain (FDTD) calculations of light propagating through liquid crystal "blazed" gratings. Liquid crystal gratings are shown to spatially modulate both phase and amplitude of propagating light.
机译：动态全息术已被证明是一种校正空间可部署光学器件中像差的方法，并且还可用于在相同环境中实现高分辨率光束转向。在本文中，我们考虑了影响这些设备效率的一些因素。具体地说，对于闪耀的薄膜光束转向光栅，考虑了每个周期的离散相位步长对高度准直光束效率的影响。还考虑了每个周期的离散相位步数对转向分辨率的影响。我们还将介绍通过液晶“闪耀”光栅传播的光的有限差分时域（FDTD）计算的一些结果。示出了液晶光栅在空间上调制传播光的相位和幅度。

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