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Liquid Crystal Devices for Light Limiting Applications

Published online by Cambridge University Press:  10 February 2011

J. S. Patel,
Zhizhong Zhuang and
Young Jin Kim
J. S. Patel
Affiliation:
Departments of Physics and Electrical Engineering, The Pennsylvania State University, University Park, PA 16802Licom Technologies, Inc., 200 Innovation Blvd., State College, PA 16803
Zhizhong Zhuang
Affiliation:
Departments of Physics and Electrical Engineering, The Pennsylvania State University, University Park, PA 16802
Young Jin Kim
Affiliation:
Departments of Physics and Electrical Engineering, The Pennsylvania State University, University Park, PA 16802
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Abstract

In this paper, we introduce a novel liquid crystal structure, the Inverse Twisted Smectic Structure (ITSS), which has several advantages over the previously reported twisted smectic structure. Both these structures are capable of high-speed, gray scale modulation and phase modulation capability. Additionally, the easy fabrication of the ITSS makes it more attractive for practical applications. We discuss the use of this structure and the fabrication devices using the ITSS. Possible applications, such as the birefringence wavelength filter (BWF), and the digital wavelength filter (DWF) are also discussed and demonstrated experimentally.

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References

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