Yang Donghao, Chemingui Marouen, Wang Yu, Zhang Xinzheng, Drevensek-Olenik Irena, Hassan Faheem, Wu Qiang, Li Yigang, Saadaoui Lotfi, Xu Jingjun
The MOE Key Laboratory of Weak-Light Nonlinear Photonics and International Sino-Slovenian Joint Research Center on Liquid Crystal Photonics, TEDA Institute of Applied Physics, School of Physics, Nankai University, Tianjin 300457, China.
LR99ES16 Laboratoire de Physique de la Matière Molle et de la Modélisation Electromagnétique, Faculté des Sciences de Tunis, Département de Physique, Université de Tunis El Manar, Tunis 2092, Tunisia.
Polymers (Basel). 2023 Feb 28;15(5):1226. doi: 10.3390/polym15051226.
We investigate the laser emission from a polymer-cholesteric liquid crystal superstructure with coexisting opposite chiralities fabricated by refilling a right-handed polymeric scaffold with a left-handed cholesteric liquid crystalline material. The superstructure exhibits two photonic band gaps corresponding to the right- and left-circularly polarized light. By adding a suitable dye, dual-wavelength lasing with orthogonal circular polarizations is realized in this single-layer structure. The wavelength of the left-circularly polarized laser emission is thermally tunable, while the wavelength of the right-circularly polarized emission is relatively stable. Due to its relative simplicity and tunability characteristics, our design might have broad application prospects in various fields of photonics and display technology.
我们研究了一种聚合物胆甾相液晶超结构的激光发射，该超结构通过用左旋胆甾相液晶材料填充右旋聚合物支架来制造，具有共存的相反手性。该超结构呈现出对应于右旋和左旋圆偏振光的两个光子带隙。通过添加合适的染料，在这种单层结构中实现了具有正交圆偏振的双波长激光发射。左旋圆偏振激光发射的波长是热可调的，而右旋圆偏振发射的波长相对稳定。由于其相对简单和可调谐特性，我们的设计可能在光子学和显示技术的各个领域具有广阔的应用前景。
