High-resolution photoaligned liquid-crystal micropolarizer array for polarization imaging in visible spectrum

We report a superior high-resolution micropolarizer array fabrication technology that combines a linear polarizer with a micropatterned liquid-crystal (LC) cell. A 2 μm pitch is achieved by using UV light to define the orientation of the micropolarizer elements. Reported experimental results validate the concept of high-performance photoaligned LC micropolarizer arrays with major principal transmittance of ∼80% and extinction ratio as high as ∼3200 (35 dB).