A tunable liquid crystal Fabry-Perot hyperspectral imaging device in mid-infrared wavelength range

2013 ◽  
Author(s):  
Anbang Fu ◽  
Huaidong Zhang ◽  
Xinyu Zhang ◽  
Hongshi Sang ◽  
Tianyu Zhang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Hyperspectral Imaging ◽  
Wavelength Range ◽  
Imaging Device ◽  
Mid Infrared ◽  
Infrared Wavelength ◽  
Fabry Perot

An electrically controlled liquid crystal Fabry-Perot hyperspectral imaging chip in mid-infrared region

2013 ◽  
Author(s):  
Anbang Fu ◽  
Huaidong Zhang ◽  
Xinyu Zhang ◽  
Hongshi Sang ◽  
Changsheng Xie
Keyword(s):  
Liquid Crystal ◽  
Hyperspectral Imaging ◽  
Infrared Region ◽  
Mid Infrared ◽  
Fabry Perot

scholarly journals Research on a Dual-Mode Infrared Liquid-Crystal Device for Simultaneous Electrically Adjusted Filtering and Zooming

Micromachines ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 137 ◽  
Author(s):  
Zhonglun Liu ◽  
Mingce Chen ◽  
Zhaowei Xin ◽  
Wanwan Dai ◽  
Xinjie Han ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Spectral Component ◽  
Dual Mode ◽  
Infrared Wavelength ◽  
Fabry Perot ◽  
Micro Holes ◽  
Micro Cavity ◽  
Micro Lens Array ◽  
20 Nm ◽  
Micro Lens

A new dual-mode liquid-crystal (LC) micro-device constructed by incorporating a Fabry–Perot (FP) cavity and an arrayed LC micro-lens for performing simultaneous electrically adjusted filtering and zooming in infrared wavelength range is presented in this paper. The main micro-structure is a micro-cavity consisting of two parallel zinc selenide (ZnSe) substrates that are pre-coated with ~20-nm aluminum (Al) layers which served as their high-reflection films and electrodes. In particular, the top electrode of the device is patterned by 44 × 38 circular micro-holes of 120 μm diameter, which also means a 44 × 38 micro-lens array. The micro-cavity with a typical depth of ~12 μm is fully filled by LC materials. The experimental results show that the spectral component with needed frequency or wavelength can be selected effectively from incident micro-beams, and both the transmission spectrum and the point spread function can be adjusted simultaneously by simply varying the root-mean-square value of the signal voltage applied, so as to demonstrate a closely correlated feature of filtering and zooming. In addition, the maximum transmittance is already up to ~20% according the peak-to-valley value of the spectral transmittance curves, which exhibits nearly twice the increment compared with that of the ordinary LC-FP filtering without micro-lenses.

scholarly journals Chiral plasmonic metasurface absorbers in the mid-infrared wavelength range

2020 ◽  
Vol 45 (19) ◽  
pp. 5372
Author(s):  
Md. Shamim Mahmud ◽  
Daniel Rosenmann ◽  
David A. Czaplewski ◽  
Jie Gao ◽  
Xiaodong Yang
Keyword(s):  
Wavelength Range ◽  
Mid Infrared ◽  
Infrared Wavelength

Negative Refractive Index Liquid Crystal at Mid-Infrared Wavelength

2013 ◽  
Vol 28 (1) ◽  
pp. 15-18
Author(s):  
李晓平 LI Xiao-ping ◽  
贾丹 JIA Dan ◽  
杨程亮 YANG Cheng-liang ◽  
彭增辉 PENG Zeng-hui ◽  
宣丽 XUAN Li
Keyword(s):  
Refractive Index ◽  
Liquid Crystal ◽  
Negative Refractive Index ◽  
Mid Infrared ◽  
Infrared Wavelength

scholarly journals Optical modulation in Ge-rich SiGe waveguides in the mid-infrared wavelength range up to 11 µm

2020 ◽  
Vol 1 (1) ◽  
Author(s):  
Miguel Montesinos-Ballester ◽  
Vladyslav Vakarin ◽  
Joan Manel Ramirez ◽  
Qiankun Liu ◽  
Carlos Alonso-Ramos ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Optical Modulation ◽  
Mid Infrared ◽  
Infrared Wavelength

Compact tunable mid-infrared Fabry–Pérot filters actuated by liquid crystal elastomers

2020 ◽  
Vol 30 (7) ◽  
pp. 075002
Author(s):  
Ziyu Wang ◽  
Jasleen Kaur Lall ◽  
Yannick Folwill ◽  
Hans Zappe
Keyword(s):  
Liquid Crystal ◽  
Mid Infrared ◽  
Fabry Perot ◽  
Liquid Crystal Elastomers
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