Hsiang En-Lin, Wu Shin-Tson
College of Optics and Photonics, University of Central Florida, Orlando, FL, 32816, USA.
Light Sci Appl. 2023 Mar 1;12(1):52. doi: 10.1038/s41377-023-01097-3.
Compared to conventional bulky spectropolarimeters, computational spectropolarimeters which reconstruct light-field information such as polarization and spectrum in a compact form factor, are critical equipment enabling new applications. The key component of a computational spectropolarimeter is a tunable light-field modulator, in which liquid crystal-based device is a promising candidate. By varying the applied voltage, the tunable liquid crystal metasurface can modulate the phase and spectral information of the incident light, and after a few trials, this important information can be decoded mathematically. Such a novel approach paves the foundation for developing compact and low-cost spectropolarimetric imaging devices with widespread applications in biomedical imaging, remote sensing, and optical communications.
与传统的大型光谱偏振仪相比，计算光谱偏振仪能够以紧凑的外形重构诸如偏振和光谱等光场信息，是实现新应用的关键设备。计算光谱偏振仪的关键部件是可调谐光场调制器，其中基于液晶的器件是一个很有前景的候选者。通过改变施加的电压，可调谐液晶超表面可以调制入射光的相位和光谱信息，经过几次试验后，这些重要信息可以通过数学方法解码。这种新颖的方法为开发紧凑且低成本的光谱偏振成像设备奠定了基础，这些设备在生物医学成像、遥感和光通信等领域有着广泛的应用。
