Bragg liquid crystal polarization gratings

An optical element includes a plurality of stacked birefringent sublayers, such as liquid crystal sublayers, configured to alter a direction of propagation of light passing therethrough according to the Bragg condition. The stacked birefringent sublayers respectively include local optical axes that...

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Bibliographic Details
Main Authors KEKAS JASON D, KOMANDURI RAVI K, ESCUTI MICHAEL J
Format Patent
LanguageChinese
English
Published 19.04.2017
Subjects
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
PHYSICS
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Summary:An optical element includes a plurality of stacked birefringent sublayers, such as liquid crystal sublayers, configured to alter a direction of propagation of light passing therethrough according to the Bragg condition. The stacked birefringent sublayers respectively include local optical axes that vary along respective interfaces between adjacent ones of the stacked birefringent sublayers to define respective grating periods. The respective thicknesses of the stacked birefringent sublayers may be less than a wavelength of the light. Related apparatus and methods of operation are also discussed. 种光学元件包括多个堆叠双折射子层，诸如液晶子层，其被配置成根据布拉格条件而改变光通过其的传播方向。堆叠双折射子层分别地包括局部光轴，其沿着在堆叠双折射子层中的相邻些之间的相应界面而变化以限定相应光栅周期。堆叠双折射子层的相应厚度可以小于光的波长。还讨论了相关装置和操作方法。
Bibliography:Application Number: CN201580028108