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A Photonic System for Generating Unconditional Polarization-Entangled Photons Based on Multiple Quantum Interference
Published on: September 5, 2019
High-resolution photoaligned liquid-crystal micropolarizer array for polarization imaging in visible spectrum
Xiaojin Zhao1, Amine Bermak, Farid Boussaid
1Department of Electronic and Computer Engineering, Hong Kong University of Science & Technology,Clear Water Bay, Kowloon, Hong Kong SAR, China. eexjzhao@ust.hk
Optics Letters
|December 3, 2009
Summary
We developed advanced fabrication technology for high-resolution micropolarizer arrays using liquid-crystal cells and UV light. This method achieves high transmittance and an excellent extinction ratio for improved optical performance.
Area of Science:
- Optics and Photonics
- Materials Science
- Liquid Crystal Technology
Background:
- Micropolarizer arrays are crucial optical components.
- Existing fabrication methods face limitations in resolution and performance.
Purpose of the Study:
- To introduce a novel fabrication technology for high-resolution micropolarizer arrays.
- To demonstrate the performance capabilities of the developed photoaligned liquid-crystal (LC) micropolarizer arrays.
Main Methods:
- Fabrication combines a linear polarizer with a micropatterned liquid-crystal cell.
- Ultraviolet (UV) light is used to define the orientation of micropolarizer elements.
- Achieved a 2 micrometer pitch for high resolution.
Main Results:
- Experimental validation of the photoaligned LC micropolarizer array concept.
- Achieved a major principal transmittance of approximately 80%.
- Demonstrated an extinction ratio as high as approximately 3200 (35 dB).
Conclusions:
- The reported technology offers a superior method for fabricating high-resolution micropolarizer arrays.
- The photoaligned LC micropolarizer arrays exhibit high performance characteristics.
- This advancement has implications for various optical applications requiring precise polarization control.
