Temperature-dependent optical response of phase-only nematic liquid crystal on silicon devices

Zichen Zhang; Huan Xu; Haining Yang; Zheng You; D. P. Chu

doi:10.3788/COL201614.111601

Journals >Chinese Optics Letters >Volume 14 >Issue 11 >Page 111601 > Article

Chinese Optics Letters
Vol. 14, Issue 11, 111601 (2016)

Temperature-dependent optical response of phase-only nematic liquid crystal on silicon devices

Zichen Zhang¹, Huan Xu², Haining Yang², Zheng You³, and D. P. Chu^2、*

Author Affiliations

¹Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China

²Electrical Engineering Division, Department of Engineering, University of Cambridge, 9JJ Thomson Ave, Cambridge CB3 0FA, UK

³State Key Laboratory of Precision Measurement Technology and Instruments, Collaborative Innovation Center for Micro/Nano Fabrication, Device and System; Department of Precision Instrument, Tsinghua University, Beijing 100029, China

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DOI: 10.3788/COL201614.111601 Cite this Article Set citation alerts

Zichen Zhang, Huan Xu, Haining Yang, Zheng You, D. P. Chu. Temperature-dependent optical response of phase-only nematic liquid crystal on silicon devices[J]. Chinese Optics Letters, 2016, 14(11): 111601 Copy Citation Text

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Abstract

Wavelength-dependent birefringence and dielectric anisotropy, two major optical properties of the nematic liquid crystal materials used in phase-only liquid crystal on silicon (LCOS) devices, are measured as a function of operating temperatures. The dynamic phase modulation depth and threshold voltage of these phase-only LCOS devices are also measured in the corresponding temperature range and compared with theoretical predictions. The results show that the dynamic response time can be reduced significantly by an appropriate increase of device operative temperature, while the necessary device elements, such as phase modulation depth and threshold voltage, can be maintained at the same time.